<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _configure_manager(self):
 """ Creates the Manager instance to handle networks. """

        self._manager = CloudNetworkManager(self, resource_class=CloudNetwork,
                response_key="network", uri_base="os-networksv2")