code: function(otherRecognizer) {
          if (invokeArrayArg(otherRecognizer, 'recognizeWith', this)) {
              return this;
          }
  
          var simultaneous = this.simultaneous;
          otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
          if (!simultaneous[otherRecognizer.id]) {
              simultaneous[otherRecognizer.id] = otherRecognizer;
              otherRecognizer.recognizeWith(this);
          }
          return this;
      }
docs: recognize simultaneous with an other recognizer.
  @param {Recognizer} otherRecognizer
  @returns {Recognizer} this