private static Optional<Tag> getTableNameTag(ExtendedCell cell) {
    Optional<Tag> tag = Optional.empty();
    if (cell.getTagsLength() > 0) {
      tag = PrivateCellUtil.getTag(cell, TagType.MOB_TABLE_NAME_TAG_TYPE);
    }
    return tag;
  }
Gets the table name tag.
@param cell The current cell.
@return The table name tag.
hbase-server/src/main/java/org/apache/hadoop/hbase/mob/MobUtils.java