code: function PrettyPrinter (report, streamOptions) {
      TapReceiver.call(this, streamOptions);
      this._subtestStack = [];
      states.install(this, report);
  }
docs: // CONSTRUCTION ///////////////////////////////////////////////////////////// 
  Construct a PrettyPrinter
  
  @param report The instance of BaseReport to send parser events.
  @param streamOptions Options for configuring a stream.Writable