Something like this:

```
if port_id or port_group_id:
            required_version = _common.VIF_OPTIONAL_PARAMS_VERSION
        else:
            required_version = _common.VIF_VERSION
        version = self._assert_microversion_for(
            session,
            'commit',
            required_version,
            error_message=("Cannot use VIF attachment API"),
        )
```