public ASTBuilder add(int tokenType, String text) {
    ParseDriver.adaptor.addChild(curr, createAST(tokenType, text));
    return this;
  }
@return an ASTNode representing a (table) reference to a CTE with the specified name and alias.
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/translator/ASTBuilder.java