SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayEnumerateUniq (children 1)
     ExpressionList (children 1)
      Function array (children 1)
       ExpressionList (children 3)
        Function toNullable (children 1)
         ExpressionList (children 1)
          Function toUInt256 (children 1)
           ExpressionList (children 1)
            Literal UInt64_321
        Function toNullable (children 1)
         ExpressionList (children 1)
          Function toUInt256 (children 1)
           ExpressionList (children 1)
            Literal UInt64_456
        Function toNullable (children 1)
         ExpressionList (children 1)
          Function toUInt256 (children 1)
           ExpressionList (children 1)
            Literal UInt64_321