pkg/docgen: the big refactor

pkg/docgen/test/multi_library_code/lib/test_lib.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_lib;
 
 import 'test_lib_foo.dart';
 import 'test_lib_bar.dart';
 export 'test_lib_foo.dart';
 export 'test_lib_bar.dart';
 
 /**
  * Doc comment for class [A].
  *
@@ skipping 17 matching lines @@
    */
   void doThis(int A) {
     print(A);
   }
 }
 
 // A trivial use of `B` and `C` to eliminate import warnings
 B sampleMethod(C cInstance) {
   throw new UnimplementedError();
 }