Fix issue #395

[Rezyan]

Hi,

This short pull request fix the issue https://github.com/spatie/crawler/issues/395.

Methods signatures from the PHP documentation:

• ArrayAccess

  interface ArrayAccess {
  /* Methods */
  public offsetExists(mixed $offset): bool
  public offsetGet(mixed $offset): mixed
  public offsetSet(mixed $offset, mixed $value): void
  public offsetUnset(mixed $offset): void
  }

• Iterator

  interface Iterator extends Traversable {
  /* Methods */
  public current(): mixed
  public key(): mixed
  public next(): void
  public rewind(): void
  public valid(): bool
  }

Regards.

[freekmurze]

Thanks!