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

    switch (field) {
    case FILE_TYPE:
      return isSetFileType();
    case PATH:
      return isSetPath();
    case FILE_SIZE:
      return isSetFileSize();
    case MASK:
      return isSetMask();
    case INDEX:
      return isSetIndex();
    case SPEC_ID:
      return isSetSpecId();
    case PARTITION:
      return isSetPartition();
    case RECORD_COUNT:
      return isSetRecordCount();
    case UPPER_BOUNDS:
      return isSetUpperBounds();
    }
    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/DataFile.java