Issue 26460. Add Quick Fix for missing 'Function.call()' implementation.

pkg/analysis_server/lib/src/services/correction/fix.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 analysis_server.src.services.correction.fix;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
 import 'package:analysis_server/src/plugin/server_plugin.dart';
@@ skipping 52 matching lines @@
     errorCode ==
         StaticWarningCode
             .NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_FIVE_PLUS ||
     errorCode == StaticWarningCode.CAST_TO_NON_TYPE ||
     errorCode == StaticWarningCode.TYPE_TEST_WITH_UNDEFINED_NAME ||
     errorCode == StaticWarningCode.UNDEFINED_CLASS ||
     errorCode == StaticWarningCode.FINAL_NOT_INITIALIZED ||
     errorCode == StaticWarningCode.FINAL_NOT_INITIALIZED_CONSTRUCTOR_1 ||
     errorCode == StaticWarningCode.FINAL_NOT_INITIALIZED_CONSTRUCTOR_2 ||
     errorCode == StaticWarningCode.FINAL_NOT_INITIALIZED_CONSTRUCTOR_3_PLUS ||
+    errorCode == StaticWarningCode.FUNCTION_WITHOUT_CALL ||
     errorCode == StaticWarningCode.UNDEFINED_IDENTIFIER ||
     errorCode ==
         CompileTimeErrorCode.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE ||
     errorCode == CompileTimeErrorCode.INVALID_ANNOTATION ||
     errorCode == CompileTimeErrorCode.NO_DEFAULT_SUPER_CONSTRUCTOR_EXPLICIT ||
     errorCode == CompileTimeErrorCode.PART_OF_NON_PART ||
     errorCode ==
         CompileTimeErrorCode.UNDEFINED_CONSTRUCTOR_IN_INITIALIZER_DEFAULT ||
     errorCode == CompileTimeErrorCode.URI_DOES_NOT_EXIST ||
     errorCode == HintCode.CAN_BE_NULL_AFTER_NULL_AWARE ||
@@ skipping 64 matching lines @@
   static const CREATE_FILE =
       const FixKind('CREATE_FILE', 50, "Create file '{0}'");
   static const CREATE_FUNCTION =
       const FixKind('CREATE_FUNCTION', 51, "Create function '{0}'");
   static const CREATE_GETTER =
       const FixKind('CREATE_GETTER', 50, "Create getter '{0}'");
   static const CREATE_LOCAL_VARIABLE =
       const FixKind('CREATE_LOCAL_VARIABLE', 50, "Create local variable '{0}'");
   static const CREATE_METHOD =
       const FixKind('CREATE_METHOD', 50, "Create method '{0}'");
+  static const CREATE_MISSING_METHOD_CALL =
+      const FixKind('CREATE_MISSING_METHOD_CALL', 49, "Create method 'call'.");
   static const CREATE_MISSING_OVERRIDES = const FixKind(
       'CREATE_MISSING_OVERRIDES', 49, "Create {0} missing override(s)");
   static const CREATE_NO_SUCH_METHOD = const FixKind(
       'CREATE_NO_SUCH_METHOD', 51, "Create 'noSuchMethod' method");
   static const IMPORT_LIBRARY_PREFIX = const FixKind('IMPORT_LIBRARY_PREFIX',
       51, "Use imported library '{0}' with prefix '{1}'");
   static const IMPORT_LIBRARY_PROJECT =
       const FixKind('IMPORT_LIBRARY_PROJECT', 49, "Import library '{0}'");
   static const IMPORT_LIBRARY_SDK =
       const FixKind('IMPORT_LIBRARY_SDK', 49, "Import library '{0}'");
@@ skipping 63 matching lines @@
   @override
   final AnalysisError error;
 
   FixContextImpl(this.resourceProvider, this.analysisContext, this.error);
 
   FixContextImpl.from(FixContext other)
       : resourceProvider = other.resourceProvider,
         analysisContext = other.analysisContext,
         error = other.error;
 }