code: function requeue(ddqBackendInstance, recordId, callback) {
          var record;
  
          record = ddqBackendInstance.getRecord(recordId);
          record.isProcessing = false;
          record.requeued = true;
          callback();
      }
docs: Sets the record to be requeued so another listener can pick it up
  and try to process the message again.
  
  @param {Object} ddqBackendInstance
  @param {string} recordId
  @param {Function} callback