def METHOD_NAME(self, fullname: str) -> ModuleType:
    # By the time we're loading, the package should've already been built
    # by the previous step of finding the spec.
    old_value = _ALREADY_BUILT.set(True)
    try:
        return importlib.import_module(self.fullname)
    finally:
        _ALREADY_BUILT.reset(old_value)