code: function(item, callback) {
                  for (var i = 0; i < chatUploadQueue.length; i++) {
                      if (chatUploadQueue[i].message.uniqueId == item.message.uniqueId) {
                          chatUploadQueue.splice(i, 1);
                      }
                  }
                  callback && callback();
              }
docs: *****************************************************
  P R I V A T E   M E T H O D S            *
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