Elements. Add 'metadata' directly to 'ElementDirective'.

Follow up of https://dart-review.googlesource.com/c/sdk/+/443149
I added to Element and Fragment, forgot ElementDirective.

Change-Id: I9073aed99317ebf41f3ab88ceed9689424bd6ee7
Bug: #61216
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/443940
Reviewed-by: Johnni Winther <[email protected]>
Reviewed-by: Brian Wilkerson <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>

Author: scheglov

pkg/analyzer/CHANGELOG.md

@@ -2,7 +2,8 @@
 * Add `DartObject.constructorInvocation` with the constructor and arguments.
 * Make `PropertyAccessorElement.variable` non-nullable.
 * Add `documentationComment` to `Element` and `Fragment`.
-* Add `metadata` to `Element` and `Fragment`.`
+* Add `metadata` to `Element` and `Fragment`.
+* Add `metadata` to `ElementDirective`.
 * Fix draining analysis events when used by `package:build`.
 * Deprecate `LibraryElementResult.element2`, use `element` instead.
 * Deprecate `ResolvedLibraryResult.element2`, use `element` instead.

pkg/analyzer/api.txt

@@ -3459,6 +3459,7 @@ package:analyzer/dart/element/element.dart:
   ElementDirective (class extends Object implements Annotatable):
     new (constructor: ElementDirective Function())
     libraryFragment (getter: LibraryFragment)
+    metadata (getter: Metadata)
     uri (getter: DirectiveUri)
   ElementKind (class extends Object implements Comparable<ElementKind>):
     AUGMENTATION_IMPORT (static getter: ElementKind)

pkg/analyzer/lib/dart/element/element.dart

@@ -1047,6 +1047,16 @@ abstract class ElementDirective
   /// The library fragment that contains this object.
   LibraryFragment get libraryFragment;
 
+  /// The metadata associated with the element or fragment.
+  ///
+  /// If the receiver is an element that has fragments, the list will include
+  /// all of the metadata from all of the fragments.
+  ///
+  /// The list will be empty if the receiver does not have any metadata or if
+  /// the library containing this element has not yet been fully resolved.
+  @override
+  Metadata get metadata;
+
   /// The interpretation of the URI specified in the directive.
   DirectiveUri get uri;
 }