def flushall(self, asynchronous: bool = False) -> Awaitable:
        """
        Delete all keys in all databases on the current host.

        ``asynchronous`` indicates whether the operation is
        executed asynchronously by the server.
        """
        args = []
        if asynchronous:
            args.append(b"ASYNC")
        return self.execute_command("FLUSHALL", *args)

        Delete all keys in all databases on the current host.

        ``asynchronous`` indicates whether the operation is
        executed asynchronously by the server.
        
aioredis/client.py