How to use the electrumx.lib.util.protocol_tuple function in electrumX

def test_protocol_tuple():
    assert util.protocol_tuple(None) == (0, )
    assert util.protocol_tuple("foo") == (0, )
    assert util.protocol_tuple(1) == (0, )
    assert util.protocol_tuple("1") == (1, )
    assert util.protocol_tuple("0.1") == (0, 1)
    assert util.protocol_tuple("0.10") == (0, 10)
    assert util.protocol_tuple("2.5.3") == (2, 5, 3)

def test_protocol_tuple():
    assert util.protocol_tuple(None) == (0, )
    assert util.protocol_tuple("foo") == (0, )
    assert util.protocol_tuple(1) == (0, )
    assert util.protocol_tuple("1") == (1, )
    assert util.protocol_tuple("0.1") == (0, 1)
    assert util.protocol_tuple("0.10") == (0, 10)
    assert util.protocol_tuple("2.5.3") == (2, 5, 3)

def test_protocol_tuple():
    assert util.protocol_tuple(None) == (0, )
    assert util.protocol_tuple("foo") == (0, )
    assert util.protocol_tuple(1) == (0, )
    assert util.protocol_tuple("1") == (1, )
    assert util.protocol_tuple("0.1") == (0, 1)
    assert util.protocol_tuple("0.10") == (0, 10)
    assert util.protocol_tuple("2.5.3") == (2, 5, 3)

def test_protocol_tuple():
    assert util.protocol_tuple(None) == (0, )
    assert util.protocol_tuple("foo") == (0, )
    assert util.protocol_tuple(1) == (0, )
    assert util.protocol_tuple("1") == (1, )
    assert util.protocol_tuple("0.1") == (0, 1)
    assert util.protocol_tuple("0.10") == (0, 10)
    assert util.protocol_tuple("2.5.3") == (2, 5, 3)

def test_protocol_tuple():
    assert util.protocol_tuple(None) == (0, )
    assert util.protocol_tuple("foo") == (0, )
    assert util.protocol_tuple(1) == (0, )
    assert util.protocol_tuple("1") == (1, )
    assert util.protocol_tuple("0.1") == (0, 1)
    assert util.protocol_tuple("0.10") == (0, 10)
    assert util.protocol_tuple("2.5.3") == (2, 5, 3)

async def crash_old_client(self, ptuple, crash_client_ver):
        if crash_client_ver:
            client_ver = util.protocol_tuple(self.client)
            is_old_protocol = ptuple is None or ptuple <= (1, 2)
            is_old_client = client_ver != (0,) and client_ver <= crash_client_ver
            if is_old_protocol and is_old_client:
                self.logger.info(f'attempting to crash old client with version {self.client}')
                # this can crash electrum client 2.6 <= v < 3.1.2
                await self.send_notification('blockchain.relayfee', ())
                # this can crash electrum client (v < 2.8.2) UNION (3.0.0 <= v < 3.3.0)
                await self.send_notification('blockchain.estimatefee', ())

def _protocol_version_string(self, key):
        version_str = self.features.get(key)
        ptuple = protocol_tuple(version_str)
        return version_string(ptuple)

'''Broadcast a raw transaction to the network.

        raw_tx: the raw transaction as a hexadecimal string'''
        self.bump_cost(0.25 + len(raw_tx) / 5000)
        # This returns errors as JSON RPC errors, as is natural
        try:
            hex_hash = await self.session_mgr.broadcast_transaction(raw_tx)
        except DaemonError as e:
            error, = e.args
            message = error['message']
            self.logger.info(f'error sending transaction: {message}')
            raise RPCError(BAD_REQUEST, 'the transaction was rejected by '
                           f'network rules.\n\n{message}\n[{raw_tx}]')
        else:
            self.txs_sent += 1
            client_ver = util.protocol_tuple(self.client)
            if client_ver != (0, ):
                msg = self.coin.warn_old_client_on_tx_broadcast(client_ver)
                if msg:
                    self.logger.info(f'sent tx: {hex_hash}. and warned user to upgrade their '
                                     f'client from {self.client}')
                    return msg

            self.logger.info(f'sent tx: {hex_hash}')
            return hex_hash