UFile (package = null)
    UClass (ControlStructures, enum = false, interface = false, object = false)
        UFunction (test, kind = function, paramCount = 0)
            UBlockExpression
                UDeclarationsExpression
                    UVariable (x, kind = local)
                        UFunctionCallExpression (FUNCTION_CALL, argCount = 1)
                            USimpleReferenceExpression (listOf)
                            ULiteralExpression ("ABC")
                USpecialExpressionList (return)
                    ULiteralExpression (false)
