code: function (channelIdentifier, triggerIdentifier, data) {
        var path,
            rejectMsg;
        if (channelIdentifier && triggerIdentifier && data) {
          path = this.constructPath(constants.CHANNELS, channelIdentifier, constants.TRIGGERS, triggerIdentifier);
          return this.Core.PATCH(path, data);
        } else {
          rejectMsg = 'Bad Request: A channel identifier, a feed identifier and a trigger object are required.';
          return this.rejectRequest(rejectMsg);
        }
      }
docs: Update a trigger on a channel
  @param  {String|Integer} channelIdentifier A Robin channel identifier
  @param  {String|Integer} triggerIdentifier A Robin channel trigger identifier
  @param  {Object}         data              A querystring object
  @return {Function}                         A Promise