CreateFunctionQuery 02103_test_function (children 2)
 Identifier 02103_test_function
 Function lambda (children 1)
  ExpressionList (children 2)
   Function tuple (children 1)
    ExpressionList (children 1)
     Identifier x
   Function plus (children 1)
    ExpressionList (children 2)
     Identifier x
     Literal UInt64_1
