(self, transport, file, offset=0, count=None,
                       *, fallback=True)
Send a file through a transport.

        Return an amount of sent bytes.
Send a file through a transport.
Send a file through a transport .
async def sendfile(self, transport, file, offset=0, count=None,
                       *, fallback=True):
        """Send a file through a transport.

        Return an amount of sent bytes.
        """
        raise NotImplementedError
async def sendfile ( self , transport , file , offset = 0 , count = None , * , fallback = True ) : raise NotImplementedError