@org.apache.thrift.annotation.Nullable
      public static _Fields findByThriftId(int fieldId) {
        switch(fieldId) {
          case 1: // TABLE_VARIABLE
            return TABLE_VARIABLE;
          case 2: // COMMAND_TYPE
            return COMMAND_TYPE;
          case 3: // START_INDEX
            return START_INDEX;
          case 4: // END_INDEX
            return END_INDEX;
          default:
            return null;
        }
      }
@org.apache.thrift.annotation.Nullable
      public static _Fields findByThriftId(int fieldId)