public static boolean isMobReferenceCell(ExtendedCell cell) {
    if (cell.getTagsLength() > 0) {
      Optional<Tag> tag = PrivateCellUtil.getTag(cell, TagType.MOB_REFERENCE_TAG_TYPE);
      if (tag.isPresent()) {
        return true;
      }
    }
    return false;
  }
Whether the current cell is a mob reference cell.
@param cell The current cell.
@return True if the cell has a mob reference tag, false if it doesn't.
hbase-server/src/main/java/org/apache/hadoop/hbase/mob/MobUtils.java