@property
    def if_none_match(self):
        for option in self.options:
            if option.number == defines.OptionRegistry.IF_NONE_MATCH.number:
                return True
        return False
Get the if-none-match option of a request.
dataset/ETHPy150Open Tanganelli/CoAPthon/coapthon/messages/request.py/Request.if_none_match