anchor.diff:    "nativewrappers": const LibraryInfo(
         "html/nativewrappers.dart",
         category: "Client",
  -      implementation: true),
  -
  -  "unittest": const LibraryInfo(
  -      "unittest/unittest.dart",
  -      category: "Tools"),
  +      implementation: true,
  +      documented: false,
  +      platforms: VM_PLATFORM),
   
     "uri": const LibraryInfo(
         "uri/uri.dart"),
  
positive.code:   /**
     * Path to the dart2js library's *.dart file relative to this file
     * or null if dart2js uses the common library path defined above.
     */
    final String dart2jsPath;
  
    /**
     * Path to the dart2js library's patch file relative to this file
     * or null if no dart2js patch file associated with this library.
     */
    final String dart2jsPatchPath;
  
    /**
     * True if this library is internal and should not be shown to the user
     */
    final bool internal;
  
    /**
     * True if the library contains implementation details for another library.
  
negative.code:   // dom/dom_frog.dart is a placeholder for dartium dom
    "dom_deprecated": const LibraryInfo(
        "dom/dom_dart2js.dart",
        implementation: true,
        dart2jsPath: "dom/dart2js/dom_dart2js.dart",
        documented: false),
  
    "html": const LibraryInfo(
        "html/html_dartium.dart",
  