Entity::addClientMultiFieldValues

protected function addClientMultiFieldValues(
	array $items,
	array $allowedTypes,
	array $clientIds,
	int $clientEntityTypeId
): array
{
	$clientsMultiFields = $this->loadMultiFields(
		array_values($clientIds),
		\CCrmOwnerType::ResolveName($clientEntityTypeId),
		$allowedTypes
	);
	$adaptedMultiFields = [];
	foreach ($clientIds as $itemId => $contactId)
	{
		$adaptedMultiFields[$itemId] = $clientsMultiFields[$contactId] ?? [];
	}

	return $this->addMultiFieldValues($items, $adaptedMultiFields, $clientEntityTypeId);
}