/**
* @param BotInterface $bot
* @param MatcherInterface|callable $matcher If callable, it should accept a CommandInterface and return a boolean.
* @param int $priority
*
* @return self
*/
public function attach(BotInterface $bot, $matcher = null, $priority = 0)
{
if (!$matcher && $bot instanceof MatcherAggregate) {
$matcher = $bot->getMatcher();
} else {
$matcher = function () {
return true;
};
}
$this->cpu->addListener(Events::RECEIVED_COMMAND, $this->getListener($bot, $matcher), $priority);
return $this;
}
