ToDo::loadEntity

protected function loadEntity(int $ownerTypeId, int $ownerId, int $id): ?Entity\ToDo
{
	$itemIdentifier = new ItemIdentifier($ownerTypeId, $ownerId);
	$todo = Entity\ToDo::load($itemIdentifier, $id);

	if (!$todo)
	{
		$this->addError(ErrorCode::getNotFoundError());

		return null;
	}

	return $todo;
}