@Explain(displayName = "new table name", explainLevels = { Level.USER, Level.DEFAULT, Level.EXTENDED })
  public String getNewName() {
    return newName;
  }
DDL task description for ALTER TABLE ... RENAME TO ... commands.
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/misc/rename/AlterTableRenameDesc.java