protected function matches($other): bool
    {
        $this->resetProblems();
        if (!($other instanceof EventSubscriberInterface)) {
            $this->addProblem('Subscriber must implement \Symfony\Component\EventDispatcher\EventSubscriberInterface.');
            return false;
        }
        $subscribedEvents = call_user_func(array(get_class($other), 'getSubscribedEvents'));
        if (!is_array($subscribedEvents)) {
            $this->addProblem('getSubscribedEvents() must return an array.');
            return false;
        }
        foreach ($subscribedEvents as $event => $subscription) {
            /* @var $event string */
            /* @var $subscription mixed|string|array */
            $this->checkListener($other, $event, $subscription);
        }
        return !$this->hasProblems();
    }
protected function matches($other): bool
    {
        $this->resetProblems();
        if (!($other instanceof EventSubscriberInterface)) {
            $this->addProblem('Subscriber must implement \Symfony\Component\EventDispatcher\EventSubscriberInterface.');
            return false;
        }
        $subscribedEvents = call_user_func(array(get_class($other), 'getSubscribedEvents'));
        if (!is_array($subscribedEvents)) {
            $this->addProblem('getSubscribedEvents() must return an array.');
            return false;
        }
        foreach ($subscribedEvents as $event => $subscription) {
            /* @var $event string */
            /* @var $subscription mixed|string|array */
            $this->checkListener($other, $event, $subscription);
        }
        return !$this->hasProblems();
    }
protected function matches ( $ other ) : bool { $ this -> resetProblems ( ) ; if ( ! ( $ other instanceof EventSubscriberInterface ) ) { $ this -> addProblem ( 'Subscriber must implement \Symfony\Component\EventDispatcher\EventSubscriberInterface.' ) ; return false ; } $ subscribedEvents = call_user_func ( array ( get_class ( $ other ) , 'getSubscribedEvents' ) ) ; if ( ! is_array ( $ subscribedEvents ) ) { $ this -> addProblem ( 'getSubscribedEvents() must return an array.' ) ; return false ; } foreach ( $ subscribedEvents as $ event => $ subscription ) { /* @var $event string */ /* @var $subscription mixed|string|array */ $ this -> checkListener ( $ other , $ event , $ subscription ) ; } return ! $ this -> hasProblems ( ) ; }
Checks if the given object is an event subscriber.

@param  mixed $other
@return boolean
Checks if the given object is an event subscriber .