@Explain(displayName = "extended", explainLevels = { Level.USER, Level.DEFAULT, Level.EXTENDED },
      displayOnlyOnTrue = true)
  public boolean isExtended() {
    return isExtended;
  }
DDL task description for SHOW TABLES commands.
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/info/show/tables/ShowTablesDesc.java