(define "test_symbol" "test1234" '("testauto"))

(define-enum "MyEnum" '("item1" "item2") '("testauto"))

(procedure "testauto"
    (arg "a_auto_field" auto-type) ; any primitive there
    (arg "a_auto_vec" vector auto-type) ; any primitive in vector
    (arg "a_symbol_test" auto-type)
    (arg "a_enum_test" auto-type) ; Enums also can be used, but it will be serialized as String
)