How to use the punq.__init__.MissingDependencyException function in punq

if service_key in self._singletons:
            return self._singletons[service_key]

        if context.has_cached(service_key):
            return context[service_key]

        target = context.target(service_key)

        if target.is_generic_list():
            return self.resolve_all(target.generic_parameter)

        registration = target.next_impl()

        if registration is None:
            raise MissingDependencyException(
                "Failed to resolve implementation for " + str(service_key)
            )

        if service_key in registration.needs.values():
            self._resolve_impl(service_key, kwargs, context)

        return self._build_impl(registration, kwargs, context)