diff --git a/fixtures/signature_help/calls.php b/fixtures/signature_help/calls.php
index 511725b..17001a2 100644
--- a/fixtures/signature_help/calls.php
+++ b/fixtures/signature_help/calls.php
@@ -40,8 +40,9 @@ class Test
 /**
  * @param int  $i Global function param one
  * @param bool $b Default false param
+ * @param Test|null ...$things Test things
  */
-function foo(int $i, bool $b = false)
+function foo(int $i, bool $b = false, Test ...$things = null)
 {
 }
 
@@ -51,6 +52,9 @@ $t->foo(1,
 $t->foo(1,);
 $t->baz();
 
-foo();
+foo(
+    1,
+    foo(1, 2,  
+);
 
 Test::bar();
diff --git a/src/Definition.php b/src/Definition.php
index c27f871..0d157cb 100644
--- a/src/Definition.php
+++ b/src/Definition.php
@@ -99,6 +99,13 @@ class Definition
      */
     public $documentation;
 
+    /**
+     * Signature information if this definition is for a FunctionLike, for use in textDocument/signatureHelp
+     *
+     * @var SignatureInformation
+     */
+    public $signatureInformation;
+
     /**
      * Yields the definitons of all ancestor classes (the Definition fqn is yielded as key)
      *
diff --git a/src/DefinitionResolver.php b/src/DefinitionResolver.php
index c9d1400..2c1f67d 100644
--- a/src/DefinitionResolver.php
+++ b/src/DefinitionResolver.php
@@ -7,6 +7,7 @@ use LanguageServer\Index\ReadableIndex;
 use LanguageServer\Protocol\SymbolInformation;
 use Microsoft\PhpParser;
 use Microsoft\PhpParser\Node;
+use Microsoft\PhpParser\FunctionLike;
 use phpDocumentor\Reflection\{
     DocBlock, DocBlockFactory, Fqsen, Type, TypeResolver, Types
 };
@@ -34,6 +35,13 @@ class DefinitionResolver
      */
     private $docBlockFactory;
 
+    /**
+     * Creates SignatureInformation
+     *
+     * @var SignatureInformationFactory
+     */
+    private $signatureInformationFactory;
+
     /**
      * @param ReadableIndex $index
      */
@@ -42,6 +50,7 @@ class DefinitionResolver
         $this->index = $index;
         $this->typeResolver = new TypeResolver;
         $this->docBlockFactory = DocBlockFactory::createInstance();
+        $this->signatureInformationFactory = new SignatureInformationFactory($this);
     }
 
     /**
@@ -232,6 +241,10 @@ class DefinitionResolver
             $def->documentation = $this->getDocumentationFromNode($node);
         }
 
+        if ($node instanceof FunctionLike) {
+            $def->signatureInformation = $this->signatureInformationFactory->create($node);
+        }
+
         return $def;
     }
 
diff --git a/src/SignatureHelpProvider.php b/src/SignatureHelpProvider.php
index ca25e53..aba02b4 100644
--- a/src/SignatureHelpProvider.php
+++ b/src/SignatureHelpProvider.php
@@ -55,34 +55,18 @@ class SignatureHelpProvider
             $node = $doc->getNodeAtPosition($position);
 
             // Find the definition of the item being called
-            list($def, $argumentExpressionList) = $this->getCallingInfo($node);
+            list($def, $argumentExpressionList) = yield $this->getCallingInfo($node);
 
-            if (!$def) {
+            if (!$def || !$def->signatureInformation) {
                 return new SignatureHelp();
             }
 
-            // Get information from the item being called to build the signature information
-            $calledDoc = yield $this->documentLoader->getOrLoad($def->symbolInformation->location->uri);
-            if (!$calledDoc) {
-                return new SignatureHelp();
-            }
-            $calledNode = $calledDoc->getNodeAtPosition($def->symbolInformation->location->range->start);
-            $params = $this->getParameters($calledNode, $calledDoc);
-            $label = $this->getLabel($calledNode, $params, $calledDoc);
-
             // Find the active parameter
             $activeParam = $argumentExpressionList
                 ? $this->findActiveParameter($argumentExpressionList, $position, $doc)
                 : 0;
 
-            $signatureInformation = new SignatureInformation(
-                $label,
-                $params,
-                $this->definitionResolver->getDocumentationFromNode($calledNode)
-            );
-            $signatureHelp = new SignatureHelp([$signatureInformation], 0, $activeParam);
-
-            return $signatureHelp;
+            return new SignatureHelp([$def->signatureInformation], 0, $activeParam);
         });
     }
 
@@ -92,115 +76,75 @@ class SignatureHelpProvider
      *
      * @param Node $node The node to find calling information from
      *
-     * @return array|null
+     * @return Promise <array|null>
      */
     private function getCallingInfo(Node $node)
     {
-        $fqn = null;
-        $callingNode = null;
-        if ($node instanceof Node\DelimitedList\ArgumentExpressionList) {
-            // Cursor is already inside a (
-            $argumentExpressionList = $node;
-            if ($node->parent instanceof Node\Expression\ObjectCreationExpression) {
-                // Constructing something
-                $callingNode = $node->parent->classTypeDesignator;
-                if (!$callingNode instanceof Node\QualifiedName) {
-                    // We only support constructing from a QualifiedName
-                    return null;
+        return coroutine(function () use ($node) {
+            $fqn = null;
+            $callingNode = null;
+            if ($node instanceof Node\DelimitedList\ArgumentExpressionList) {
+                // Cursor is already inside a (
+                $argumentExpressionList = $node;
+                if ($node->parent instanceof Node\Expression\ObjectCreationExpression) {
+                    // Constructing something
+                    $callingNode = $node->parent->classTypeDesignator;
+                    if (!$callingNode instanceof Node\QualifiedName) {
+                        // We only support constructing from a QualifiedName
+                        return null;
+                    }
+                    $fqn = $this->definitionResolver->resolveReferenceNodeToFqn($callingNode);
+                    $fqn = "{$fqn}->__construct()";
+                } else {
+                    $callingNode = $node->parent->getFirstChildNode(
+                        Node\Expression\MemberAccessExpression::class,
+                        Node\Expression\ScopedPropertyAccessExpression::class,
+                        Node\QualifiedName::class
+                    );
                 }
-                $fqn = $this->definitionResolver->resolveReferenceNodeToFqn($callingNode);
-                $fqn = "{$fqn}->__construct()";
-            } else {
-                $callingNode = $node->parent->getFirstChildNode(
+            } elseif ($node instanceof Node\Expression\CallExpression) {
+                $argumentExpressionList = $node->getFirstChildNode(Node\DelimitedList\ArgumentExpressionList::class);
+                $callingNode = $node->getFirstChildNode(
                     Node\Expression\MemberAccessExpression::class,
                     Node\Expression\ScopedPropertyAccessExpression::class,
                     Node\QualifiedName::class
                 );
+            } elseif ($node instanceof Node\Expression\ObjectCreationExpression) {
+                $argumentExpressionList = $node->getFirstChildNode(Node\DelimitedList\ArgumentExpressionList::class);
+                $callingNode = $node->classTypeDesignator;
+                if (!$callingNode instanceof Node\QualifiedName) {
+                    // We only support constructing from a QualifiedName
+                    return null;
+                }
+                // Manually build the __construct fqn
+                $fqn = $this->definitionResolver->resolveReferenceNodeToFqn($callingNode);
+                $fqn = "{$fqn}->__construct()";
             }
-        } elseif ($node instanceof Node\Expression\CallExpression) {
-            $argumentExpressionList = $node->getFirstChildNode(Node\DelimitedList\ArgumentExpressionList::class);
-            $callingNode = $node->getFirstChildNode(
-                Node\Expression\MemberAccessExpression::class,
-                Node\Expression\ScopedPropertyAccessExpression::class,
-                Node\QualifiedName::class
-            );
-        } elseif ($node instanceof Node\Expression\ObjectCreationExpression) {
-            $argumentExpressionList = $node->getFirstChildNode(Node\DelimitedList\ArgumentExpressionList::class);
-            $callingNode = $node->classTypeDesignator;
-            if (!$callingNode instanceof Node\QualifiedName) {
-                // We only support constructing from a QualifiedName
+
+            if (!$callingNode) {
                 return null;
             }
-            // Manually build the __construct fqn
-            $fqn = $this->definitionResolver->resolveReferenceNodeToFqn($callingNode);
-            $fqn = "{$fqn}->__construct()";
-        }
 
-        if (!$callingNode) {
-            return null;
-        }
-
-        // Now find the definition of the call
-        $fqn = $fqn ?: DefinitionResolver::getDefinedFqn($callingNode);
-        if ($fqn) {
-            $def = $this->index->getDefinition($fqn);
-        } else {
-            $def = $this->definitionResolver->resolveReferenceNodeToDefinition($callingNode);
-        }
-
-        if (!$def) {
-            return null;
-        }
-        return [$def, $argumentExpressionList];
-    }
-
-    /**
-     * Creates a label for SignatureInformation
-     *
-     * @param Node\MethodDeclaration|Node\Statement\FunctionDeclaration $node   The method/function declaration node
-     *                                                                          we are building the label for
-     * @param ParameterInformation[]                                    $params Parameters that belong to the node
-     *
-     * @return string
-     */
-    private function getLabel($node, array $params): string
-    {
-        $label = '(';
-        if ($params) {
-            foreach ($params as $param) {
-                $label .= $param->label . ', ';
-            }
-            $label = substr($label, 0, -2);
-        }
-        $label .= ')';
-        return $label;
-    }
-
-    /**
-     * Builds ParameterInformation from a node
-     *
-     * @param Node\MethodDeclaration|Node\Statement\FunctionDeclaration $node The node to build parameters from
-     * @param PhpDocument                                               $doc  The document the node belongs to
-     *
-     * @return ParameterInformation[]
-     */
-    private function getParameters($node, PhpDocument $doc): array
-    {
-        $params = [];
-        if ($node->parameters) {
-            foreach ($node->parameters->getElements() as $element) {
-                $param = (string) $this->definitionResolver->getTypeFromNode($element);
-                $param .= ' ' . $element->variableName->getText($doc->getContent());
-                if ($element->default) {
-                    $param .= ' = ' . $element->default->getText($doc->getContent());
+            // Now find the definition of the call
+            $fqn = $fqn ?: DefinitionResolver::getDefinedFqn($callingNode);
+            while (true) {
+                if ($fqn) {
+                    $def = $this->index->getDefinition($fqn);
+                } else {
+                    $def = $this->definitionResolver->resolveReferenceNodeToDefinition($callingNode);
                 }
-                $params[] = new ParameterInformation(
-                    $param,
-                    $this->definitionResolver->getDocumentationFromNode($element)
-                );
+                if ($def !== null || $this->index->isComplete()) {
+                    break;
+                }
+                yield waitForEvent($this->index, 'definition-added');
             }
-        }
-        return $params;
+
+            if (!$def) {
+                return null;
+            }
+
+            return [$def, $argumentExpressionList];
+        });
     }
 
     /**
diff --git a/src/SignatureInformationFactory.php b/src/SignatureInformationFactory.php
new file mode 100644
index 0000000..0095d5c
--- /dev/null
+++ b/src/SignatureInformationFactory.php
@@ -0,0 +1,91 @@
+<?php
+declare(strict_types = 1);
+
+namespace LanguageServer;
+
+use LanguageServer\Protocol\{SignatureInformation, ParameterInformation};
+use Microsoft\PhpParser\FunctionLike;
+
+class SignatureInformationFactory
+{
+    /** @var DefinitionResolver */
+    private $definitionResolver;
+
+    /**
+     * Create a SignatureInformationFactory
+     *
+     * @param DefinitionResolver $definitionResolver
+     */
+    public function __construct(DefinitionResolver $definitionResolver)
+    {
+        $this->definitionResolver = $definitionResolver;
+    }
+
+    /**
+     * Create a SignatureInformation from a FunctionLike node
+     *
+     * @param FunctionLike $node Node to create signature information from
+     *
+     * @return SignatureInformation
+     */
+    public function create(FunctionLike $node): SignatureInformation
+    {
+        $params = $this->createParameters($node);
+		$label = $this->createLabel($params);
+		return new SignatureInformation(
+			$label,
+			$params,
+			$this->definitionResolver->getDocumentationFromNode($node)
+		);
+    }
+
+    /**
+     * Gets parameters from a FunctionLike node
+     *
+     * @param FunctionLike $node Node to get parameters from
+     *
+     * @return ParameterInformation[]
+     */
+    private function createParameters(FunctionLike $node): array
+    {
+        $params = [];
+        if ($node->parameters) {
+            foreach ($node->parameters->getElements() as $element) {
+                $param = (string) $this->definitionResolver->getTypeFromNode($element);
+                $param .= ' ';
+                if ($element->dotDotDotToken) {
+                    $param .= '...';
+                }
+                $param .= '$' . $element->getName();
+                if ($element->default) {
+                    $param .= ' = ' . $element->default->getText();
+                }
+                $params[] = new ParameterInformation(
+                    $param,
+                    $this->definitionResolver->getDocumentationFromNode($element)
+                );
+            }
+        }
+        return $params;
+    }
+
+    /**
+     * Creates a signature information label from parameters
+     *
+     * @param ParameterInformation[] $params Parameters to create the label from
+     *
+     * @return string
+     */
+    private function createLabel(array $params): string
+    {
+        $label = '(';
+        if ($params) {
+            foreach ($params as $param) {
+                $label .= $param->label . ', ';
+            }
+            $label = substr($label, 0, -2);
+        }
+        $label .= ')';
+        return $label;
+    }
+}
diff --git a/tests/Server/TextDocument/SignatureHelpTest.php b/tests/Server/TextDocument/SignatureHelpTest.php
index ef984d5..7d073c0 100644
--- a/tests/Server/TextDocument/SignatureHelpTest.php
+++ b/tests/Server/TextDocument/SignatureHelpTest.php
@@ -61,7 +61,7 @@ class SignatureHelpTest extends TestCase
     {
         return [
             'member call' => [
-                new Position(48, 9),
+                new Position(49, 9),
                 new SignatureHelp(
                     [
                         new SignatureInformation(
@@ -78,7 +78,7 @@ class SignatureHelpTest extends TestCase
                 ),
             ],
             'member call 2nd param active' => [
-                new Position(49, 12),
+                new Position(50, 12),
                 new SignatureHelp(
                     [
                         new SignatureInformation(
@@ -95,7 +95,7 @@ class SignatureHelpTest extends TestCase
                 ),
             ],
             'member call 2nd param active and closing )' => [
-                new Position(50, 11),
+                new Position(51, 11),
                 new SignatureHelp(
                     [
                         new SignatureInformation(
@@ -112,11 +112,11 @@ class SignatureHelpTest extends TestCase
                 ),
             ],
             'method with no params' => [
-                new Position(51, 9),
+                new Position(52, 9),
                 new SignatureHelp([new SignatureInformation('()', [], 'Method with no params', 0, 0)]),
             ],
             'constructor' => [
-                new Position(47, 14),
+                new Position(48, 14),
                 new SignatureHelp(
                     [
                         new SignatureInformation(
@@ -134,23 +134,24 @@ class SignatureHelpTest extends TestCase
                 ),
             ],
             'global function' => [
-                new Position(53, 4),
+                new Position(56, 15),
                 new SignatureHelp(
                     [
                         new SignatureInformation(
-                            '(int $i, bool $b = false)',
+                            '(int $i, bool $b = false, \Foo\Test|null ...$things = null)',
                             [
                                 new ParameterInformation('int $i', 'Global function param one'),
                                 new ParameterInformation('bool $b = false', 'Default false param'),
+                                new ParameterInformation('\Foo\Test|null ...$things = null', 'Test things'),
                             ]
                         ),
                     ],
                     0,
-                    0
+                    2
                 )
             ],
             'static method' => [
-                new Position(55, 10),
+                new Position(59, 10),
                 new SignatureHelp(
                     [new SignatureInformation('(mixed $a)', [new ParameterInformation('mixed $a')])],
                     0,
diff --git a/tests/Validation/cases/WithReturnTypehints.php.expected.json b/tests/Validation/cases/WithReturnTypehints.php.expected.json
index 8c6b092..a037d6c 100644
--- a/tests/Validation/cases/WithReturnTypehints.php.expected.json
+++ b/tests/Validation/cases/WithReturnTypehints.php.expected.json
@@ -31,7 +31,8 @@
             },
             "type": null,
             "declarationLine": "namespace Fixtures\\Prophecy;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "Fixtures\\Prophecy\\WithReturnTypehints": {
             "fqn": "Fixtures\\Prophecy\\WithReturnTypehints",
@@ -52,7 +53,8 @@
             },
             "type": null,
             "declarationLine": "class WithReturnTypehints extends EmptyClass",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "Fixtures\\Prophecy\\WithReturnTypehints->getSelf()": {
             "fqn": "Fixtures\\Prophecy\\WithReturnTypehints->getSelf()",
@@ -72,7 +74,12 @@
             "type__tostring": "\\self",
             "type": {},
             "declarationLine": "public function getSelf(): self {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "Fixtures\\Prophecy\\WithReturnTypehints->getName()": {
             "fqn": "Fixtures\\Prophecy\\WithReturnTypehints->getName()",
@@ -92,7 +99,12 @@
             "type__tostring": "string",
             "type": {},
             "declarationLine": "public function getName(): string {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "Fixtures\\Prophecy\\WithReturnTypehints->getParent()": {
             "fqn": "Fixtures\\Prophecy\\WithReturnTypehints->getParent()",
@@ -112,7 +124,12 @@
             "type__tostring": "\\parent",
             "type": {},
             "declarationLine": "public function getParent(): parent {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/anonymousClassMembersShouldNotBeSymbols.php.expected.json b/tests/Validation/cases/anonymousClassMembersShouldNotBeSymbols.php.expected.json
index 51343f1..f5fbba9 100644
--- a/tests/Validation/cases/anonymousClassMembersShouldNotBeSymbols.php.expected.json
+++ b/tests/Validation/cases/anonymousClassMembersShouldNotBeSymbols.php.expected.json
@@ -18,7 +18,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/arrayValueShouldBeBoolean.php.expected.json b/tests/Validation/cases/arrayValueShouldBeBoolean.php.expected.json
index 107877e..1f40635 100644
--- a/tests/Validation/cases/arrayValueShouldBeBoolean.php.expected.json
+++ b/tests/Validation/cases/arrayValueShouldBeBoolean.php.expected.json
@@ -18,7 +18,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "A->foo": {
             "fqn": "A->foo",
@@ -38,7 +39,8 @@
             "type__tostring": "string[]",
             "type": {},
             "declarationLine": "protected $foo;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/caseStatement1.php.expected.json b/tests/Validation/cases/caseStatement1.php.expected.json
index 9746749..4b2f07b 100644
--- a/tests/Validation/cases/caseStatement1.php.expected.json
+++ b/tests/Validation/cases/caseStatement1.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/classDefinition1.php.expected.json b/tests/Validation/cases/classDefinition1.php.expected.json
index 670b5de..211a12f 100644
--- a/tests/Validation/cases/classDefinition1.php.expected.json
+++ b/tests/Validation/cases/classDefinition1.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace TestNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "TestNamespace\\A": {
             "fqn": "TestNamespace\\A",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "TestNamespace\\A->a": {
             "fqn": "TestNamespace\\A->a",
@@ -64,7 +66,8 @@
             "type__tostring": "int",
             "type": {},
             "declarationLine": "public $a;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/classProperty1.php.expected.json b/tests/Validation/cases/classProperty1.php.expected.json
index 921bf0b..f5ae22a 100644
--- a/tests/Validation/cases/classProperty1.php.expected.json
+++ b/tests/Validation/cases/classProperty1.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace TestNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "TestNamespace\\TestClass": {
             "fqn": "TestNamespace\\TestClass",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class TestClass",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "TestNamespace\\TestClass->testProperty": {
             "fqn": "TestNamespace\\TestClass->testProperty",
@@ -64,7 +66,8 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public $testProperty;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "TestNamespace\\TestClass->testMethod()": {
             "fqn": "TestNamespace\\TestClass->testMethod()",
@@ -84,7 +87,17 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public function testMethod($testParameter)",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "(mixed $testParameter)",
+                "documentation": null,
+                "parameters": [
+                    {
+                        "label": "mixed $testParameter",
+                        "documentation": null
+                    }
+                ]
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/constants.php.expected.json b/tests/Validation/cases/constants.php.expected.json
index a76c059..3fcc367 100644
--- a/tests/Validation/cases/constants.php.expected.json
+++ b/tests/Validation/cases/constants.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class A",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A::suite()": {
             "fqn": "MyNamespace\\A::suite()",
@@ -64,7 +66,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public static function suite()",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/constants2.php.expected.json b/tests/Validation/cases/constants2.php.expected.json
index ae5a2ce..0837b67 100644
--- a/tests/Validation/cases/constants2.php.expected.json
+++ b/tests/Validation/cases/constants2.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class A",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A::suite()": {
             "fqn": "MyNamespace\\A::suite()",
@@ -64,7 +66,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public static function suite()",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/constants3.php.expected.json b/tests/Validation/cases/constants3.php.expected.json
index c6ad922..4b780a0 100644
--- a/tests/Validation/cases/constants3.php.expected.json
+++ b/tests/Validation/cases/constants3.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class A",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A::suite()": {
             "fqn": "MyNamespace\\A::suite()",
@@ -64,7 +66,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public static function suite()",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/constants4.php.expected.json b/tests/Validation/cases/constants4.php.expected.json
index bc46cf1..1f2bcd5 100644
--- a/tests/Validation/cases/constants4.php.expected.json
+++ b/tests/Validation/cases/constants4.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class A",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->suite()": {
             "fqn": "MyNamespace\\A->suite()",
@@ -64,7 +66,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public function suite()",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/constants5.php.expected.json b/tests/Validation/cases/constants5.php.expected.json
index 6bd7b8e..6b93043 100644
--- a/tests/Validation/cases/constants5.php.expected.json
+++ b/tests/Validation/cases/constants5.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\Mbstring": {
             "fqn": "MyNamespace\\Mbstring",
@@ -41,7 +42,8 @@
             },
             "type": null,
             "declarationLine": "class Mbstring",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\Mbstring::MB_CASE_FOLD": {
             "fqn": "MyNamespace\\Mbstring::MB_CASE_FOLD",
@@ -61,7 +63,8 @@
             "type__tostring": "\\MyNamespace\\PHP_INT_MAX",
             "type": {},
             "declarationLine": "const MB_CASE_FOLD = PHP_INT_MAX;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/constantsInFunctionParamDefault.php.expected.json b/tests/Validation/cases/constantsInFunctionParamDefault.php.expected.json
index b49f5a9..0a34c36 100644
--- a/tests/Validation/cases/constantsInFunctionParamDefault.php.expected.json
+++ b/tests/Validation/cases/constantsInFunctionParamDefault.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "interface A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "A->b()": {
             "fqn": "A->b()",
@@ -42,7 +43,17 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b ($a = MY_CONSTANT);",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "(\\MY_CONSTANT $a = MY_CONSTANT)",
+                "documentation": null,
+                "parameters": [
+                    {
+                        "label": "\\MY_CONSTANT $a = MY_CONSTANT",
+                        "documentation": null
+                    }
+                ]
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/docBlocksOnNamespaceDefinition.php.expected.json b/tests/Validation/cases/docBlocksOnNamespaceDefinition.php.expected.json
index dd1737a..27f5df9 100644
--- a/tests/Validation/cases/docBlocksOnNamespaceDefinition.php.expected.json
+++ b/tests/Validation/cases/docBlocksOnNamespaceDefinition.php.expected.json
@@ -18,7 +18,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/exceptions1.php.expected.json b/tests/Validation/cases/exceptions1.php.expected.json
index c1ee1bd..2dc57b3 100644
--- a/tests/Validation/cases/exceptions1.php.expected.json
+++ b/tests/Validation/cases/exceptions1.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/ifStatement1.php.expected.json b/tests/Validation/cases/ifStatement1.php.expected.json
index 98e6572..e422270 100644
--- a/tests/Validation/cases/ifStatement1.php.expected.json
+++ b/tests/Validation/cases/ifStatement1.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/interfaceProperty.php.expected.json b/tests/Validation/cases/interfaceProperty.php.expected.json
index 10c49f0..d22d028 100644
--- a/tests/Validation/cases/interfaceProperty.php.expected.json
+++ b/tests/Validation/cases/interfaceProperty.php.expected.json
@@ -18,7 +18,8 @@
             },
             "type": null,
             "declarationLine": "interface A  {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/magicConstantsShouldBeGlobal.php.expected.json b/tests/Validation/cases/magicConstantsShouldBeGlobal.php.expected.json
index a9c2162..5b04b54 100644
--- a/tests/Validation/cases/magicConstantsShouldBeGlobal.php.expected.json
+++ b/tests/Validation/cases/magicConstantsShouldBeGlobal.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace B;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/magicConsts.php.expected.json b/tests/Validation/cases/magicConsts.php.expected.json
index 6f863b9..545f1cb 100644
--- a/tests/Validation/cases/magicConsts.php.expected.json
+++ b/tests/Validation/cases/magicConsts.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "A::$deprecationsTriggered": {
             "fqn": "A::$deprecationsTriggered",
@@ -42,7 +43,8 @@
             "type__tostring": "\\__CLASS__[]",
             "type": {},
             "declarationLine": "private static $deprecationsTriggered;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/memberAccess1.php.expected.json b/tests/Validation/cases/memberAccess1.php.expected.json
index c039e5e..f0286c3 100644
--- a/tests/Validation/cases/memberAccess1.php.expected.json
+++ b/tests/Validation/cases/memberAccess1.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A::a()": {
             "fqn": "MyNamespace\\A::a()",
@@ -64,7 +66,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "static function a() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/memberAccess2.php.expected.json b/tests/Validation/cases/memberAccess2.php.expected.json
index 50902a1..6060e8e 100644
--- a/tests/Validation/cases/memberAccess2.php.expected.json
+++ b/tests/Validation/cases/memberAccess2.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A::a()": {
             "fqn": "MyNamespace\\A::a()",
@@ -64,7 +66,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "static function a() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/memberAccess3.php.expected.json b/tests/Validation/cases/memberAccess3.php.expected.json
index d91b27d..b0af5aa 100644
--- a/tests/Validation/cases/memberAccess3.php.expected.json
+++ b/tests/Validation/cases/memberAccess3.php.expected.json
@@ -40,7 +40,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -59,7 +60,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A::getInitializer()": {
             "fqn": "MyNamespace\\A::getInitializer()",
@@ -79,7 +81,17 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public static function getInitializer(ClassLoader $loader)",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "(\\MyNamespace\\ClassLoader $loader)",
+                "documentation": null,
+                "parameters": [
+                    {
+                        "label": "\\MyNamespace\\ClassLoader $loader",
+                        "documentation": null
+                    }
+                ]
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/memberAccess4.php.expected.json b/tests/Validation/cases/memberAccess4.php.expected.json
index 0b7e1bf..951cacd 100644
--- a/tests/Validation/cases/memberAccess4.php.expected.json
+++ b/tests/Validation/cases/memberAccess4.php.expected.json
@@ -31,7 +31,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -50,7 +51,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->testRequest()": {
             "fqn": "MyNamespace\\A->testRequest()",
@@ -70,7 +72,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public function testRequest()",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/memberAccess5.php.expected.json b/tests/Validation/cases/memberAccess5.php.expected.json
index 050cf3b..d4e9104 100644
--- a/tests/Validation/cases/memberAccess5.php.expected.json
+++ b/tests/Validation/cases/memberAccess5.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\ParseErrorsTest": {
             "fqn": "MyNamespace\\ParseErrorsTest",
@@ -41,7 +42,8 @@
             },
             "type": null,
             "declarationLine": "class ParseErrorsTest {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\ParseErrorsTest->setUp()": {
             "fqn": "MyNamespace\\ParseErrorsTest->setUp()",
@@ -61,7 +63,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public function setUp()",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/memberCall1.php.expected.json b/tests/Validation/cases/memberCall1.php.expected.json
index d02d7e3..50e91d1 100644
--- a/tests/Validation/cases/memberCall1.php.expected.json
+++ b/tests/Validation/cases/memberCall1.php.expected.json
@@ -28,7 +28,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\ParseErrorsTest": {
             "fqn": "MyNamespace\\ParseErrorsTest",
@@ -47,7 +48,8 @@
             },
             "type": null,
             "declarationLine": "class ParseErrorsTest",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\ParseErrorsTest->setAccount()": {
             "fqn": "MyNamespace\\ParseErrorsTest->setAccount()",
@@ -67,7 +69,17 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public function setAccount(AccountInterface $account)",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "(\\MyNamespace\\AccountInterface $account)",
+                "documentation": null,
+                "parameters": [
+                    {
+                        "label": "\\MyNamespace\\AccountInterface $account",
+                        "documentation": null
+                    }
+                ]
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/methodReturnType.php.expected.json b/tests/Validation/cases/methodReturnType.php.expected.json
index 2c89994..0d537c5 100644
--- a/tests/Validation/cases/methodReturnType.php.expected.json
+++ b/tests/Validation/cases/methodReturnType.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "class FooClass {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "FooClass->foo()": {
             "fqn": "FooClass->foo()",
@@ -42,7 +43,12 @@
             "type__tostring": "\\FooClass",
             "type": {},
             "declarationLine": "public function foo(): FooClass {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/multipleNamespaces.php.expected.json b/tests/Validation/cases/multipleNamespaces.php.expected.json
index fa51f2d..c308cf9 100644
--- a/tests/Validation/cases/multipleNamespaces.php.expected.json
+++ b/tests/Validation/cases/multipleNamespaces.php.expected.json
@@ -31,7 +31,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace1;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace1\\B": {
             "fqn": "MyNamespace1\\B",
@@ -50,7 +51,8 @@
             },
             "type": null,
             "declarationLine": "class B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace1\\B->b()": {
             "fqn": "MyNamespace1\\B->b()",
@@ -70,7 +72,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "MyNamespace2": {
             "fqn": "MyNamespace2",
@@ -89,7 +96,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace2;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace2\\A": {
             "fqn": "MyNamespace2\\A",
@@ -110,7 +118,8 @@
             },
             "type": null,
             "declarationLine": "class A extends MyNamespace1\\B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace2\\A->a()": {
             "fqn": "MyNamespace2\\A->a()",
@@ -130,7 +139,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/multiplePreceedingComments.php.expected.json b/tests/Validation/cases/multiplePreceedingComments.php.expected.json
index 96cbb4a..2bca2b6 100644
--- a/tests/Validation/cases/multiplePreceedingComments.php.expected.json
+++ b/tests/Validation/cases/multiplePreceedingComments.php.expected.json
@@ -18,7 +18,8 @@
             },
             "type": null,
             "declarationLine": "class Foo",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "Foo->fn()": {
             "fqn": "Foo->fn()",
@@ -38,7 +39,12 @@
             "type__tostring": "\\Iterator",
             "type": {},
             "declarationLine": "public function fn()",
-            "documentation": "Foo"
+            "documentation": "Foo",
+            "signatureInformation": {
+                "label": "()",
+                "documentation": "Foo",
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/nameToken.php.expected.json b/tests/Validation/cases/nameToken.php.expected.json
index 37cb4ca..c52d483 100644
--- a/tests/Validation/cases/nameToken.php.expected.json
+++ b/tests/Validation/cases/nameToken.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "A->b()": {
             "fqn": "A->b()",
@@ -42,7 +43,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/namespaces2.php.expected.json b/tests/Validation/cases/namespaces2.php.expected.json
index 0dffc9f..cd0ade5 100644
--- a/tests/Validation/cases/namespaces2.php.expected.json
+++ b/tests/Validation/cases/namespaces2.php.expected.json
@@ -31,7 +31,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace1;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/namespaces5.php.expected.json b/tests/Validation/cases/namespaces5.php.expected.json
index e609ca2..7ad96f3 100644
--- a/tests/Validation/cases/namespaces5.php.expected.json
+++ b/tests/Validation/cases/namespaces5.php.expected.json
@@ -40,7 +40,8 @@
             },
             "type": null,
             "declarationLine": "namespace B;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/namespaces6.php.expected.json b/tests/Validation/cases/namespaces6.php.expected.json
index bf5a045..6c559a3 100644
--- a/tests/Validation/cases/namespaces6.php.expected.json
+++ b/tests/Validation/cases/namespaces6.php.expected.json
@@ -18,7 +18,8 @@
             },
             "type": null,
             "declarationLine": "namespace A \\ B;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/namespaces8.php.expected.json b/tests/Validation/cases/namespaces8.php.expected.json
index d303647..95c5019 100644
--- a/tests/Validation/cases/namespaces8.php.expected.json
+++ b/tests/Validation/cases/namespaces8.php.expected.json
@@ -28,7 +28,8 @@
             },
             "type": null,
             "declarationLine": "namespace LanguageServer\\Tests\\Utils;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/objectCreation.php.expected.json b/tests/Validation/cases/objectCreation.php.expected.json
index 8fec38f..90ad0f5 100644
--- a/tests/Validation/cases/objectCreation.php.expected.json
+++ b/tests/Validation/cases/objectCreation.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -41,7 +42,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -61,7 +63,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/objectCreation2.php.expected.json b/tests/Validation/cases/objectCreation2.php.expected.json
index e546528..b6f69a3 100644
--- a/tests/Validation/cases/objectCreation2.php.expected.json
+++ b/tests/Validation/cases/objectCreation2.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B": {
             "fqn": "MyNamespace\\B",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -63,7 +65,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -83,7 +86,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/objectCreation3.php.expected.json b/tests/Validation/cases/objectCreation3.php.expected.json
index d2d3e2f..a5f389b 100644
--- a/tests/Validation/cases/objectCreation3.php.expected.json
+++ b/tests/Validation/cases/objectCreation3.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "A->a()": {
             "fqn": "A->a()",
@@ -42,7 +43,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/param1.php.expected.json b/tests/Validation/cases/param1.php.expected.json
index 40cfbd1..dd7c2a6 100644
--- a/tests/Validation/cases/param1.php.expected.json
+++ b/tests/Validation/cases/param1.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\init()": {
             "fqn": "MyNamespace\\init()",
@@ -42,7 +43,17 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function init(Hi $view)",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "(\\MyNamespace\\Hi $view)",
+                "documentation": null,
+                "parameters": [
+                    {
+                        "label": "\\MyNamespace\\Hi $view",
+                        "documentation": null
+                    }
+                ]
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/parent1.php.expected.json b/tests/Validation/cases/parent1.php.expected.json
index 56d7e61..661f631 100644
--- a/tests/Validation/cases/parent1.php.expected.json
+++ b/tests/Validation/cases/parent1.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B": {
             "fqn": "MyNamespace\\B",
@@ -41,7 +42,8 @@
             },
             "type": null,
             "declarationLine": "class B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B->b()": {
             "fqn": "MyNamespace\\B->b()",
@@ -61,7 +63,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -82,7 +89,8 @@
             },
             "type": null,
             "declarationLine": "class A extends B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -102,7 +110,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/parent3.php.expected.json b/tests/Validation/cases/parent3.php.expected.json
index 3954754..9ad39f8 100644
--- a/tests/Validation/cases/parent3.php.expected.json
+++ b/tests/Validation/cases/parent3.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B": {
             "fqn": "MyNamespace\\B",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B->b()": {
             "fqn": "MyNamespace\\B->b()",
@@ -64,7 +66,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -85,7 +92,8 @@
             },
             "type": null,
             "declarationLine": "class A extends B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -105,7 +113,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/propertyName1.php.expected.json b/tests/Validation/cases/propertyName1.php.expected.json
index cc31ed6..d43cabf 100644
--- a/tests/Validation/cases/propertyName1.php.expected.json
+++ b/tests/Validation/cases/propertyName1.php.expected.json
@@ -18,7 +18,8 @@
             },
             "type": null,
             "declarationLine": "class MyClass",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyClass->mainPropertyName": {
             "fqn": "MyClass->mainPropertyName",
@@ -38,7 +39,8 @@
             "type__tostring": "string",
             "type": {},
             "declarationLine": "protected $mainPropertyName;",
-            "documentation": "The name of the main property, or NULL if there is none."
+            "documentation": "The name of the main property, or NULL if there is none.",
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/propertyName2.php.expected.json b/tests/Validation/cases/propertyName2.php.expected.json
index d4efb42..4b5bd9b 100644
--- a/tests/Validation/cases/propertyName2.php.expected.json
+++ b/tests/Validation/cases/propertyName2.php.expected.json
@@ -18,7 +18,8 @@
             },
             "type": null,
             "declarationLine": "class MyClass",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyClass->mainPropertyName": {
             "fqn": "MyClass->mainPropertyName",
@@ -38,7 +39,8 @@
             "type__tostring": "string",
             "type": {},
             "declarationLine": "protected $mainPropertyName;",
-            "documentation": "The name of the main property, or NULL if there is none."
+            "documentation": "The name of the main property, or NULL if there is none.",
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/returnType.php.expected.json b/tests/Validation/cases/returnType.php.expected.json
index 20cdadf..17a4802 100644
--- a/tests/Validation/cases/returnType.php.expected.json
+++ b/tests/Validation/cases/returnType.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace TestNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "TestNamespace\\whatever()": {
             "fqn": "TestNamespace\\whatever()",
@@ -45,7 +46,17 @@
             "type__tostring": "\\TestNamespace\\TestClass",
             "type": {},
             "declarationLine": "function whatever(TestClass $param): TestClass2 {",
-            "documentation": "Aute duis elit reprehenderit tempor cillum proident anim laborum eu laboris reprehenderit ea incididunt."
+            "documentation": "Aute duis elit reprehenderit tempor cillum proident anim laborum eu laboris reprehenderit ea incididunt.",
+            "signatureInformation": {
+                "label": "(\\TestNamespace\\TestClass $param)",
+                "documentation": "Aute duis elit reprehenderit tempor cillum proident anim laborum eu laboris reprehenderit ea incididunt.",
+                "parameters": [
+                    {
+                        "label": "\\TestNamespace\\TestClass $param",
+                        "documentation": "Adipisicing non non cillum sint incididunt cillum enim mollit."
+                    }
+                ]
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/scopedPropertyAccess.php.expected.json b/tests/Validation/cases/scopedPropertyAccess.php.expected.json
index ec50c7a..6020ee8 100644
--- a/tests/Validation/cases/scopedPropertyAccess.php.expected.json
+++ b/tests/Validation/cases/scopedPropertyAccess.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -44,7 +45,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A::a()": {
             "fqn": "MyNamespace\\A::a()",
@@ -64,7 +66,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "static function a() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/scopedPropertyAccess2.php.expected.json b/tests/Validation/cases/scopedPropertyAccess2.php.expected.json
index e1712cd..664d790 100644
--- a/tests/Validation/cases/scopedPropertyAccess2.php.expected.json
+++ b/tests/Validation/cases/scopedPropertyAccess2.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/scopedPropertyAccess3.php.expected.json b/tests/Validation/cases/scopedPropertyAccess3.php.expected.json
index 913721b..54ca5f1 100644
--- a/tests/Validation/cases/scopedPropertyAccess3.php.expected.json
+++ b/tests/Validation/cases/scopedPropertyAccess3.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "class A {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "A::$a": {
             "fqn": "A::$a",
@@ -45,7 +46,8 @@
             "type__tostring": "string",
             "type": {},
             "declarationLine": "static $a;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/scopedPropertyAccess5.php.expected.json b/tests/Validation/cases/scopedPropertyAccess5.php.expected.json
index 7e56123..ee944ed 100644
--- a/tests/Validation/cases/scopedPropertyAccess5.php.expected.json
+++ b/tests/Validation/cases/scopedPropertyAccess5.php.expected.json
@@ -31,7 +31,8 @@
             },
             "type": null,
             "declarationLine": "class TestClass implements TestInterface {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "TestClass::$testProperty": {
             "fqn": "TestClass::$testProperty",
@@ -51,7 +52,8 @@
             "type__tostring": "\\TestClass[]",
             "type": {},
             "declarationLine": "public static $testProperty;",
-            "documentation": "Lorem excepteur officia sit anim velit veniam enim."
+            "documentation": "Lorem excepteur officia sit anim velit veniam enim.",
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/self1.php.expected.json b/tests/Validation/cases/self1.php.expected.json
index fe2bc63..899df1c 100644
--- a/tests/Validation/cases/self1.php.expected.json
+++ b/tests/Validation/cases/self1.php.expected.json
@@ -28,7 +28,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B": {
             "fqn": "MyNamespace\\B",
@@ -47,7 +48,8 @@
             },
             "type": null,
             "declarationLine": "class B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B->b()": {
             "fqn": "MyNamespace\\B->b()",
@@ -67,7 +69,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -88,7 +95,8 @@
             },
             "type": null,
             "declarationLine": "class A extends B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -108,7 +116,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/self2.php.expected.json b/tests/Validation/cases/self2.php.expected.json
index 60ab062..1c1ef87 100644
--- a/tests/Validation/cases/self2.php.expected.json
+++ b/tests/Validation/cases/self2.php.expected.json
@@ -28,7 +28,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B": {
             "fqn": "MyNamespace\\B",
@@ -47,7 +48,8 @@
             },
             "type": null,
             "declarationLine": "class B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B->b()": {
             "fqn": "MyNamespace\\B->b()",
@@ -67,7 +69,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -88,7 +95,8 @@
             },
             "type": null,
             "declarationLine": "class A extends B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -108,7 +116,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/self3.php.expected.json b/tests/Validation/cases/self3.php.expected.json
index 7d66c2b..0a43146 100644
--- a/tests/Validation/cases/self3.php.expected.json
+++ b/tests/Validation/cases/self3.php.expected.json
@@ -28,7 +28,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B": {
             "fqn": "MyNamespace\\B",
@@ -47,7 +48,8 @@
             },
             "type": null,
             "declarationLine": "class B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B->b()": {
             "fqn": "MyNamespace\\B->b()",
@@ -67,7 +69,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -88,7 +95,8 @@
             },
             "type": null,
             "declarationLine": "class A extends B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -108,7 +116,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/self4.php.expected.json b/tests/Validation/cases/self4.php.expected.json
index 64765b7..b925fdd 100644
--- a/tests/Validation/cases/self4.php.expected.json
+++ b/tests/Validation/cases/self4.php.expected.json
@@ -37,7 +37,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -56,7 +57,8 @@
             },
             "type": null,
             "declarationLine": "class A",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A::suite()": {
             "fqn": "MyNamespace\\A::suite()",
@@ -76,7 +78,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public static function suite()",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/self5.php.expected.json b/tests/Validation/cases/self5.php.expected.json
index eb41832..10ba7fb 100644
--- a/tests/Validation/cases/self5.php.expected.json
+++ b/tests/Validation/cases/self5.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -41,7 +42,8 @@
             },
             "type": null,
             "declarationLine": "class A",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->typesProvider()": {
             "fqn": "MyNamespace\\A->typesProvider()",
@@ -61,7 +63,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public function typesProvider()",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/static1.php.expected.json b/tests/Validation/cases/static1.php.expected.json
index db1a0d2..c71c7c2 100644
--- a/tests/Validation/cases/static1.php.expected.json
+++ b/tests/Validation/cases/static1.php.expected.json
@@ -28,7 +28,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B": {
             "fqn": "MyNamespace\\B",
@@ -47,7 +48,8 @@
             },
             "type": null,
             "declarationLine": "class B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B->b()": {
             "fqn": "MyNamespace\\B->b()",
@@ -67,7 +69,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -88,7 +95,8 @@
             },
             "type": null,
             "declarationLine": "class A extends B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -108,7 +116,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/static2.php.expected.json b/tests/Validation/cases/static2.php.expected.json
index bb662cb..5b5a706 100644
--- a/tests/Validation/cases/static2.php.expected.json
+++ b/tests/Validation/cases/static2.php.expected.json
@@ -28,7 +28,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B": {
             "fqn": "MyNamespace\\B",
@@ -47,7 +48,8 @@
             },
             "type": null,
             "declarationLine": "class B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B->b()": {
             "fqn": "MyNamespace\\B->b()",
@@ -67,7 +69,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -88,7 +95,8 @@
             },
             "type": null,
             "declarationLine": "class A extends B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -108,7 +116,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/static3.php.expected.json b/tests/Validation/cases/static3.php.expected.json
index 34d3851..a88f554 100644
--- a/tests/Validation/cases/static3.php.expected.json
+++ b/tests/Validation/cases/static3.php.expected.json
@@ -28,7 +28,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B": {
             "fqn": "MyNamespace\\B",
@@ -47,7 +48,8 @@
             },
             "type": null,
             "declarationLine": "class B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\B->b()": {
             "fqn": "MyNamespace\\B->b()",
@@ -67,7 +69,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function b() {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -88,7 +95,8 @@
             },
             "type": null,
             "declarationLine": "class A extends B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -108,7 +116,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/static4.php.expected.json b/tests/Validation/cases/static4.php.expected.json
index de71d41..adc75a9 100644
--- a/tests/Validation/cases/static4.php.expected.json
+++ b/tests/Validation/cases/static4.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "namespace MyNamespace;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A": {
             "fqn": "MyNamespace\\A",
@@ -46,7 +47,8 @@
             },
             "type": null,
             "declarationLine": "class A extends B {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "MyNamespace\\A->a()": {
             "fqn": "MyNamespace\\A->a()",
@@ -66,7 +68,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/staticMethodReturnType.php.expected.json b/tests/Validation/cases/staticMethodReturnType.php.expected.json
index e6661ec..8de5673 100644
--- a/tests/Validation/cases/staticMethodReturnType.php.expected.json
+++ b/tests/Validation/cases/staticMethodReturnType.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "class FooClass {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "FooClass::staticFoo()": {
             "fqn": "FooClass::staticFoo()",
@@ -42,7 +43,12 @@
             "type__tostring": "\\FooClass",
             "type": {},
             "declarationLine": "public static function staticFoo(): FooClass {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         },
         "FooClass->bar()": {
             "fqn": "FooClass->bar()",
@@ -62,7 +68,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public function bar() { }",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/stringVariable.php.expected.json b/tests/Validation/cases/stringVariable.php.expected.json
index 1d4c7e3..6372c89 100644
--- a/tests/Validation/cases/stringVariable.php.expected.json
+++ b/tests/Validation/cases/stringVariable.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "class B",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "B->hi": {
             "fqn": "B->hi",
@@ -42,7 +43,8 @@
             "type__tostring": "int",
             "type": {},
             "declarationLine": "public $hi;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "B->a()": {
             "fqn": "B->a()",
@@ -62,7 +64,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "function a () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/testQualifiedNameOutsideOfNamespace.php.expected.json b/tests/Validation/cases/testQualifiedNameOutsideOfNamespace.php.expected.json
index 509907c..7966afb 100644
--- a/tests/Validation/cases/testQualifiedNameOutsideOfNamespace.php.expected.json
+++ b/tests/Validation/cases/testQualifiedNameOutsideOfNamespace.php.expected.json
@@ -22,7 +22,8 @@
             },
             "type": null,
             "declarationLine": "namespace SomeNamespace { }",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         }
     }
 }
\ No newline at end of file
diff --git a/tests/Validation/cases/verifyFqsenOnClassProperty.php.expected.json b/tests/Validation/cases/verifyFqsenOnClassProperty.php.expected.json
index 662a7ed..a434cf2 100644
--- a/tests/Validation/cases/verifyFqsenOnClassProperty.php.expected.json
+++ b/tests/Validation/cases/verifyFqsenOnClassProperty.php.expected.json
@@ -25,7 +25,8 @@
             },
             "type": null,
             "declarationLine": "class Foo {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "Foo->bar": {
             "fqn": "Foo->bar",
@@ -45,7 +46,8 @@
             "type__tostring": "\\",
             "type": {},
             "declarationLine": "protected $bar;",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": null
         },
         "Foo->foo()": {
             "fqn": "Foo->foo()",
@@ -65,7 +67,12 @@
             "type__tostring": "mixed",
             "type": {},
             "declarationLine": "public function foo () {",
-            "documentation": null
+            "documentation": null,
+            "signatureInformation": {
+                "label": "()",
+                "documentation": null,
+                "parameters": []
+            }
         }
     }
 }
\ No newline at end of file