Interface Countable

Countable
- Symfony\Component\Routing\RouteCollection implements IteratorAggregate<string, Route>, Countable
- Twig\Node\Node implements Countable, IteratorAggregate
- ArrayIterator implements SeekableIterator, ArrayAccess, Serializable, Countable
- Symfony\Component\HttpFoundation\HeaderBag implements IteratorAggregate<string, list<string|null>>, Countable
  - Symfony\Component\HttpFoundation\ResponseHeaderBag
- Symfony\Component\HttpFoundation\ParameterBag implements IteratorAggregate<string, mixed>, Countable
- DOMNodeList implements IteratorAggregate, Countable
- Doctrine\DBAL\Query\Expression\CompositeExpression implements Countable
- Doctrine\Common\Collections\ReadableCollection extends Countable, IteratorAggregate<TKey, T>
  - Doctrine\Common\Collections\Collection extends ReadableCollection<TKey, T>, ArrayAccess<TKey, T>
    - Doctrine\Common\Collections\ArrayCollection implements Collection<TKey, T>, Selectable<TKey, T>, Stringable
    - Doctrine\Common\Collections\AbstractLazyCollection implements Collection<TKey, T>
      - Doctrine\ORM\PersistentCollection implements Selectable<TKey, T>

Methods
`public`	`count(): int` Implemented by `Symfony\Component\Routing\RouteCollection::count()` `Doctrine\Common\Collections\ArrayCollection::count()` `Twig\Node\Node::count()` `ArrayIterator::count()` `Doctrine\Common\Collections\AbstractLazyCollection::count()` `Symfony\Component\HttpFoundation\HeaderBag::count()` `Symfony\Component\HttpFoundation\ParameterBag::count()` `DOMNodeList::count()` `Doctrine\DBAL\Query\Expression\CompositeExpression::count()`	#