public static MobFileName create(String startKey, String date, String uuid, String regionName) {
    return new MobFileName(startKey, date, uuid, regionName);
  }
Creates an instance of MobFileName
@param startKey   The md5 hex string of the start key.
@param date       The string of the latest timestamp of cells in this file, the format is
                  yyyymmdd.
@param uuid       The uuid.
@param regionName name of a region, where this file was created during flush or compaction.
@return An instance of a MobFileName.
hbase-server/src/main/java/org/apache/hadoop/hbase/mob/MobFileName.java