calling setOptions on subscriber does not take effect

[dermasmid]

if changing flowControl settings after calling .on they dont not get into effect

const subscription = pubSubClient.subscription(subscriptionNameOrId);
const messageHandler = message => {

  message.ack();
};

subscription.on('message', messageHandler);

// does not have any effect on flow control
subscription.setOptions({
flowControl: {
          maxMessages: 1,
          allowExcessMessages: true,
 }
})

[swarmiakimmo]

I was able to confirm the bug by testing the client with a local script.