fixes #25094, type params in static methods shouldn't always be an error

pkg/analyzer/lib/src/generated/error.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 engine.error;
 
 import 'dart:collection';
 
 import 'package:analyzer/src/generated/ast.dart' show AstNode;
 import 'package:analyzer/src/generated/element.dart';
@@ skipping 5434 matching lines @@
   /**
    * 10 Generics: However, a type parameter is considered to be a malformed type
    * when referenced by a static member.
    *
    * 15.1 Static Types: Any use of a malformed type gives rise to a static
    * warning. A malformed type is then interpreted as dynamic by the static type
    * checker and the runtime.
    */
   static const StaticWarningCode TYPE_PARAMETER_REFERENCED_BY_STATIC =
       const StaticWarningCode('TYPE_PARAMETER_REFERENCED_BY_STATIC',
-          "Static members cannot reference type parameters");
+          "Static members cannot reference type parameters of the class");
 
   /**
    * 12.16.3 Static Invocation: A static method invocation <i>i</i> has the form
    * <i>C.m(a<sub>1</sub>, &hellip;, a<sub>n</sub>, x<sub>n+1</sub>:
    * a<sub>n+1</sub>, &hellip; x<sub>n+k</sub>: a<sub>n+k</sub>)</i>. It is a
    * static warning if <i>C</i> does not denote a class in the current scope.
    *
    * Parameters:
    * 0: the name of the undefined class
    */
@@ skipping 162 matching lines @@
    * Initialize a newly created error code to have the given [name].
    */
   const TodoCode(String name) : super(name, "{0}");
 
   @override
   ErrorSeverity get errorSeverity => ErrorSeverity.INFO;
 
   @override
   ErrorType get type => ErrorType.TODO;
 }