anchor.diff:     * The command line arguments.
      */
     final List<String> args;
  +
  +  /**
  +   * The path to the Dart SDK used during analysis.
  +   */
  +  String sdkPath;
   
     /**
      * The manager for the analysis server.
  
positive.code:   static const BINARY_NAME = 'dartdeps';
  
    /**
     * The name of the option used to print usage information.
     */
    static const String HELP_OPTION = 'help';
  
negative.code:    */
    Future<AnalysisManager> start() {
      var parser = new ArgParser();
      parser.addOption(
          DART_SDK_OPTION,
          help: '[sdkPath] path to Dart SDK');
      parser.addFlag(HELP_OPTION,
          help: 'print this help message without starting analysis',
          defaultsTo: false,
  