code: public static String nameOfPersist(int x) {
      switch( x ) {
      case ICE : return "ICE";
      case HDFS: return "HDFS";
      case S3  : return "S3";
      case NFS : return "NFS";
      case TCP : return "TCP";
      case GCS : return "GCS";
      default  : return null;
      }
    }
docs: One of ICE, HDFS, S3, GCS, NFS or TCP, according to where this Value is persisted.
  @return Short String of the persitance name