/**
* @return null
* @throws Exception\TodoNotExpired
* @throws Exception\TodoNotOpen
*/
public function markAsExpired()
{
$status = TodoStatus::fromString(TodoStatus::EXPIRED);
if (!$this->status->isOpen() || $this->status->isExpired()) {
throw Exception\TodoNotOpen::triedToExpire($this->status, $this);
}
if ($this->deadline->isMet()) {
throw Exception\TodoNotExpired::withDeadline($this->deadline, $this);
}
$this->recordThat(TodoWasMarkedAsExpired::fromStatus($this->todoId, $this->status, $status));
}
