#NEWLINE# def _verify_service_plugins_requirements( self ) : #NEWLINE# #INDENT# for service_plugin in cfg . CONF . service_plugins : #NEWLINE# #INDENT# extension_drivers = SERVICE_PLUGINS_REQUIRED_DRIVERS . get ( service_plugin , [ ] ) #NEWLINE# for extension_driver in extension_drivers : #NEWLINE# #INDENT# if ( extension_driver not in self . extension_manager . names ( ) ) : #NEWLINE# #INDENT# raise ml2_exc . ExtensionDriverNotFound ( driver = service_plugin , service_plugin = service_plugin )