GroupItemCollection.php

См. документацию.

<?php
 
namespace Bitrix\Im\V2\Notification\Group;
 
class GroupItemCollection implements \IteratorAggregate, \Countable
{
    private array $items;

    public function __construct(GroupItem ...$items)
    {
        $this->items = $items;
    }
 
    public function getIterator(): \ArrayIterator
    {
        return new \ArrayIterator($this->items);
    }
 
    public function count(): int
    {
        return count($this->items);
    }
 
    public function toRestFormat(): array
    {
        return array_map(fn(GroupItem $item): array => $item->toRestFormat(), $this->items);
    }

    public function getAll(): array
    {
        return $this->items;
    }
}