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