addEventHandler allows 1 parameter but removeEventHandler requires 2

[kubk]

According to TypeScript it's possible to use addEventHandler with 1 parameter but it's not clear how to unsubscribe from it then:

this.telegramClient.addEventHandler(this.onUnknownEvent);
this.telegramClient.removeEventHandler(this.onUnknownEvent); // TS error - 2 arguments are expected

gramjs/gramjs/client/TelegramClient.ts

Lines 1111 to 1123 in 2e8eff3

	addEventHandler(callback: { (event: any): void }, event?: EventBuilder) {
	return updateMethods.addEventHandler(this, callback, event);
	}
	/**
	* Inverse operation of addEventHandler().<br>
	*
	* @param callback - the callback function to be removed.
	* @param event - the type of the event.
	*/
	removeEventHandler(callback: CallableFunction, event: EventBuilder) {
	return updateMethods.removeEventHandler(this, callback, event);
	}

[kubk]

I see that addEventHandler eventually fallbacks to new Raw({}):

gramjs/gramjs/client/updates.ts

Line 47 in 2e8eff3

event = new raw({}) as Raw;

Can create a PR that either fixes addEventHandler typings (simpler but BC break) or marks removeEventHandler's second argument optional and loads the Raw class