@property<EOL><INDENT>def netengine(self):<DEDENT>
<EOL>if not self.backend:<EOL><INDENT>return None<EOL><DEDENT>if not self.__netengine:<EOL><INDENT>NetengineBackend = self.backend_class<EOL>arguments = self._build_netengine_arguments()<EOL>self.__netengine = NetengineBackend(**arguments)<EOL><DEDENT>return self.__netengine<EOL>
access netengine instance