@Override
  public boolean isSet(_Fields field) {
    if (field == null) {
      throw new java.lang.IllegalArgumentException();
    }

    switch (field) {
    case COLUMNS:
      return isSetColumns();
    case PKS:
      return isSetPks();
    case PARTITION_COLUMNS:
      return isSetPartitionColumns();
    case SORT_COLUMNS:
      return isSetSortColumns();
    }
    throw new java.lang.IllegalStateException();
  }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
amoro-common/src/main/gen-java/org/apache/amoro/api/Schema.java