<s> """<STR_LIT>""" <EOL> from neutron_lib import exceptions <EOL> from neutron . _i18n import _ <EOL> class MechanismDriverError ( exceptions . NeutronException ) : <EOL> """<STR_LIT>""" <EOL> message = _ ( "<STR_LIT>" ) <EOL> class ExtensionDriverError ( exceptions . InvalidInput ) : <EOL> """<STR_LIT>""" <EOL> message = _ ( "<STR_LIT>" ) <EOL> class ExtensionDriverNotFound ( exceptions . InvalidConfigurationOption ) : <EOL> """<STR_LIT>""" <EOL> message = _ ( "<STR_LIT>" <EOL> "<STR_LIT>" ) <EOL> class UnknownNetworkType ( exceptions . NeutronException ) : <EOL> """<STR_LIT>""" <EOL> message = _ ( "<STR_LIT>" ) </s>
