@Explain(displayName="Action expression", explainLevels={ Level.USER, Level.DEFAULT, Level.EXTENDED })
  public String getActionExpression() {
    return actionExpression;
  }
DDL task description for ALTER TRIGGER commands.
ql/src/java/org/apache/hadoop/hive/ql/ddl/workloadmanagement/trigger/alter/AlterWMTriggerDesc.java