Issue 28261. Add support for implementing generic methods in Quick Fix.

pkg/analysis_server/test/services/correction/fix_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.services.correction.fix;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
 import 'package:analysis_server/plugin/protocol/protocol.dart'
@@ skipping 2601 matching lines @@
 
 class B extends A {
   @override
   void foo() {
     // TODO: implement foo
   }
 }
 ''');
   }
 
+  test_createMissingOverrides_method_generic() async {
+    resolveTestUnit('''
+class C<T> {}
+class V<E> {}
+
+abstract class A {
+  E foo<E extends C<int>>(V<E> v);
+}
+
+class B implements A {
+}
+''');
+    await assertHasFix(
+        DartFixKind.CREATE_MISSING_OVERRIDES,
+        '''
+class C<T> {}
+class V<E> {}
+
+abstract class A {
+  E foo<E extends C<int>>(V<E> v);
+}
+
+class B implements A {
+  @override
+  E foo<E extends C<int>>(V<E> v) {
+    // TODO: implement foo
+  }
+}
+''');
+  }
+
   test_createMissingOverrides_operator() async {
     resolveTestUnit('''
 abstract class A {
   int operator [](int index);
   void operator []=(int index, String value);
 }
 
 class B extends A {
 }
 ''');
@@ skipping 2908 matching lines @@
   var v = 42;
   print('v: $v');
 }
 ''');
   }
 
   void verifyResult(String expectedResult) {
     expect(resultCode, expectedResult);
   }
 }