async def change_url(self, url: str, description: str = None):
        """ change the url of that attachment

        |methcoro|

        Args:
            url: url you want to change
            description: *optional* description for your attachment

        Raises:
            ValueError: url must not be None
            APIException

        """
        await self._change(url=url, description=description)
async def change_url ( self , url : str , description : str = None ) : await self . _change ( url = url , description = description )
change the url of that attachment

        |methcoro|

        Args:
            url: url you want to change
            description: *optional* description for your attachment

        Raises:
            ValueError: url must not be None
            APIException