<s> """<STR_LIT>""" <EOL> from neutron . common import exceptions <EOL> class ServiceChainDriverError ( exceptions . NeutronException ) : <EOL> """<STR_LIT>""" <EOL> message = _ ( "<STR_LIT>" ) <EOL> class ServiceChainException ( exceptions . NeutronException ) : <EOL> """<STR_LIT>""" <EOL> pass <EOL> class ServiceChainBadRequest ( exceptions . BadRequest , ServiceChainException ) : <EOL> """<STR_LIT>""" <EOL> pass <EOL> class ServiceChainDeploymentError ( ServiceChainException ) : <EOL> message = _ ( "<STR_LIT>" ) <EOL> class InvalidServiceTypeForReferenceDriver ( ServiceChainBadRequest ) : <EOL> message = _ ( "<STR_LIT>" <EOL> "<STR_LIT>" ) <EOL> class NodeUpdateNotSupported ( ServiceChainBadRequest ) : <EOL> message = _ ( "<STR_LIT>" <EOL> "<STR_LIT>" ) </s>
