@org.apache.amoro.shade.thrift.org.apache.thrift.annotation.Nullable
  public java.util.Iterator<DataFile> getDeleteFilesIterator() {
    return (this.deleteFiles == null) ? null : this.deleteFiles.iterator();
  }
Returns true if field addFiles is set (has been assigned a value) and false otherwise
amoro-common/src/main/gen-java/org/apache/amoro/api/TableChange.java