ValueCollection.php

См. документацию.

<?php
 
namespace Bitrix\Bizproc\Document;
 
abstract class ValueCollection implements \ArrayAccess
{
    protected $document = [];
 
    public function __construct(array $document)
    {
        $this->document = $document;
    }
 
    public function offsetGet($offset)
    {
        return $this->document[$offset] ?? null;
    }
 
    public function offsetExists($offset)
    {
        return isset($this->document[$offset]);
    }
 
    public function offsetSet($offset, $value)
    {
 
    }
 
    public function offsetUnset($offset)
    {
 
    }
}