TODO add docstring

def store_broadcast_message(self, message, sender_wif, wifs,
                                change_address=None, txouts=None, fee=10000,
                                lock_time=0, dust_limit=common.DUST_LIMIT):
        """TODO add docstring"""
        rawtx = self.create_tx(txouts=txouts, lock_time=lock_time)
        rawtx = self.add_broadcast_message(rawtx, message, sender_wif,
                                           dust_limit=dust_limit)
        rawtx = self.add_inputs(rawtx, wifs, change_address=change_address,
                                fee=fee)
        return self.publish(rawtx)