Fixes a rename in subclass of the unparser.

pkg/docgen/lib/src/models/annotation.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 docgen.models.annotation;
 
 import '../exports/source_mirrors.dart';
 
 import '../exports/dart2js_mirrors.dart' show ResolvedNode;
 
@@ skipping 91 matching lines @@
   }
 
   visitNodeList(NodeList node) {
     addToken(node.beginToken);
     if (recursionLevel == 1) sb.clear();
     if (node.nodes != null) {
       recursionLevel++;
       unparseNodeListFrom(node, node.nodes);
       recursionLevel--;
     }
-    if (node.endToken != null) add(node.endToken.value);
+    if (node.endToken != null) write(node.endToken.value);
   }
 }