public void addToChanges(TableChange elem) {
    if (this.changes == null) {
      this.changes = new java.util.ArrayList<TableChange>();
    }
    this.changes.add(elem);
  }
Returns true if field action is set (has been assigned a value) and false otherwise
amoro-common/src/main/gen-java/org/apache/amoro/api/TableCommitMeta.java