tricky_assert1.m:010: In interface for module `tricky_assert1':
tricky_assert1.m:010:   error: exported promise refers to predicate
tricky_assert1.m:010:   `tricky_assert1.local'/0, which is defined in the
tricky_assert1.m:010:   implementation section of module `tricky_assert1'.
tricky_assert1.m:010:   Either move the promise into the implementation
tricky_assert1.m:010:   section, or move the definition into the interface.