Issue 24440. Fix for renaming libraries using 'part of' directives.

pkg/analyzer/lib/src/generated/ast.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.ast;
 
 import 'dart:collection';
 
 import 'element.dart';
 import 'engine.dart' show AnalysisEngine;
@@ skipping 6599 matching lines @@
   Element visitLibraryDirective(LibraryDirective node) => node.element;
 
   @override
   Element visitMethodDeclaration(MethodDeclaration node) => node.element;
 
   @override
   Element visitMethodInvocation(MethodInvocation node) =>
       node.methodName.bestElement;
 
   @override
+  Element visitPartOfDirective(PartOfDirective node) => node.element;
+
+  @override
   Element visitPostfixExpression(PostfixExpression node) => node.bestElement;
 
   @override
   Element visitPrefixedIdentifier(PrefixedIdentifier node) => node.bestElement;
 
   @override
   Element visitPrefixExpression(PrefixExpression node) => node.bestElement;
 
   @override
   Element visitStringLiteral(StringLiteral node) {
@@ skipping 14050 matching lines @@
   }
 
   @override
   accept(AstVisitor visitor) => visitor.visitYieldStatement(this);
 
   @override
   void visitChildren(AstVisitor visitor) {
     _safelyVisitChild(_expression, visitor);
   }
 }