vlib/v/checker/tests/modules/implement_private_interface/main.v:7:16: error: `Bar` cannot implement private interface `implement_private_interface.baz.Foo` of other module
    5 | fn main() {
    6 |     b := Bar{10}
    7 |     baz.print_foo(b) // prints 10
      |                   ^
    8 | }
    9 |