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

    switch (field) {
    case INNER_TABLE:
      return isSetInnerTable();
    case ADD_FILES:
      return isSetAddFiles();
    case DELETE_FILES:
      return isSetDeleteFiles();
    case SNAPSHOT_ID:
      return isSetSnapshotId();
    case SNAPSHOT_SEQUENCE:
      return isSetSnapshotSequence();
    case PARENT_SNAPSHOT_ID:
      return isSetParentSnapshotId();
    }
    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/TableChange.java