def _setup_loader(self):
        """
        Setup loader paths so that we can load resources.
        """
        self._loader = self._session.get_component('data_loader')
        self._loader.search_paths.append(
            os.path.join(os.path.dirname(__file__), 'data')
        )

        Setup loader paths so that we can load resources.
        
boto3/session.py