templatecollection.php

См. документацию.

<?php
 
namespace Bitrix\Location\Entity\Format;
 
use Bitrix\Location\Entity\Generic\Collection;
use Bitrix\Main\ArgumentTypeException;
 
final class TemplateCollection extends Collection
{
    protected $items = [];

    public function addItem($template): int
    {
        if(!($template instanceof Template))
        {
            throw new ArgumentTypeException('field must be the instance of Template');
        }
 
        $this->removeTemplateByType($template->getType());
        return parent::addItem($template);
    }

    private function removeTemplateByType(string $type): void
    {
        foreach ($this->items as $idx => $template)
        {
            if($template->getType() === $type)
            {
                unset($this->items[$idx]);
                break;
            }
        }
    }

    public function getTemplate(string $type): ?Template
    {
        foreach ($this->items as $template)
        {
            if($template->getType() === $type)
            {
                return $template;
            }
        }
 
        return null;
    }
}