def _configure_manager(self):
        self._manager = ContainerManager(self, resource_class=Container,
                response_key="", uri_base="")
Return the environment variable for a backend port.
dataset/ETHPy150Open rackspace/pyrax/pyrax/object_storage.py/StorageClient._configure_manager--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/api/backends/backends.py/_get_dev_port_var