Yield row tuples from a series of lift operations.

        Row tuples only requirement is that the first element
        be the binary id of a node.

        Args:
            lops (list): A list of lift operations.

        Yields:
            (tuple): (layer_indx, (buid, ...)) rows.

async def getLiftRows(self, lops):
        '''
        Yield row tuples from a series of lift operations.

        Row tuples only requirement is that the first element
        be the binary id of a node.

        Args:
            lops (list): A list of lift operations.

        Yields:
            (tuple): (layer_indx, (buid, ...)) rows.
        '''
        for layeridx, layr in enumerate(self.layers):
            async for x in layr.getLiftRows(lops):
                yield layeridx, x