vlib/v/checker/tests/option_fn_var_err.vv:18:9: error: type `?DataFn` is an Option, it must be unwrapped first
   16 | fn main() {
   17 |     req := find_func('vlang')
   18 |     fun := req('options')
      |            ~~~~~~~~~~~~~~
   19 |     println(fun)
   20 | }