vlib/v/checker/tests/comptime_param_not_fn_err.vv:5:12: error: iterating over `.params` is supported only for functions, and `Test` is not a function
    3 | 
    4 | fn main() {
    5 |     $for f in Test.params {
      |               ~~~~
    6 |         println(f)
    7 |     }