def save(self, filename=None):
        filename = Path(filename) if filename is not None else self.filename
        with filename.open("w") as f:
            f.write(self.yaml)
async def pre_process(self, message, data):
        """
        context language variable will be set each time when update from 'process_update_types' comes
        value is the result of 'get_user_language' method
        """
        self.context_lang.set(await self.get_user_language(obj=message))