public static String getMobFileName(Cell cell) {
    return Bytes.toString(cell.getValueArray(), cell.getValueOffset() + Bytes.SIZEOF_INT,
      cell.getValueLength() - Bytes.SIZEOF_INT);
  }
Gets the mob file name from the mob ref cell. A mob ref cell has a mob reference tag. The value
of a mob ref cell consists of two parts, real mob value length and mob file name. The real mob
value length takes 4 bytes. The remaining part is the mob file name.
@param cell The mob ref cell.
@return The mob file name.
hbase-server/src/main/java/org/apache/hadoop/hbase/mob/MobUtils.java