SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayFold (children 1)
     ExpressionList (children 3)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 2)
          Identifier acc
          Identifier x
        Function toNullable (children 1)
         ExpressionList (children 1)
          Function plus (children 1)
           ExpressionList (children 2)
            Identifier acc
            Function multiply (children 1)
             ExpressionList (children 2)
              Identifier x
              Literal UInt64_2
      Literal Array_[UInt64_1, UInt64_2, UInt64_3, UInt64_4]
      Function toInt64 (children 1)
       ExpressionList (children 1)
        Literal UInt64_3
