@Explain(displayName="If exists", explainLevels = { Level.USER, Level.DEFAULT, Level.EXTENDED },
      displayOnlyOnTrue = true)
  public boolean getIfExists() {
    return ifExists;
  }
DDL task description for DROP RESOURCE PLAN commands.
ql/src/java/org/apache/hadoop/hive/ql/ddl/workloadmanagement/resourceplan/drop/DropResourcePlanDesc.java