SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function hex (children 1)
     ExpressionList (children 1)
      Function keccak256 (children 1)
       ExpressionList (children 1)
        Function unhex (children 1)
         ExpressionList (children 1)
          Literal \'\'
