#NEWLINE# def create_x509_certificate( self , builder , private_key , algorithm ) : #NEWLINE# #INDENT# for b in self . _filtered_backends ( X509Backend ) : #NEWLINE# #INDENT# return b . create_x509_certificate ( builder , private_key , algorithm ) #NEWLINE# #UNINDENT# raise UnsupportedAlgorithm ( 'This backend does not support X.509.' , _Reasons . UNSUPPORTED_X509 )