<s> class SendwithusError ( Exception ) : <EOL> """<STR_LIT>""" <EOL> class AuthenticationError ( SendwithusError ) : <EOL> """<STR_LIT>""" <EOL> class APIError ( SendwithusError ) : <EOL> """<STR_LIT>""" <EOL> class ServerError ( SendwithusError ) : <EOL> """<STR_LIT>""" </s>
