Item::getDocument

static function getDocument($documentId, $documentType = null): ?array
{
	$fields = null;
	[$typeId, $itemId] = explode(':', $documentId);

	$type = TypeTable::getById($typeId)->fetchObject();

	if ($type && $item = $type->getItem($itemId))
	{
		$fields = $item->collectValues();
		self::internalizeFieldsValues($documentId, $fields);
	}

	return $fields;
}