/**
* Create a TaskWrapper.
*
* Temporary tasks are always wrapped in a TaskWrapper, as are
* any tasks that are added to a collection. If a temporary task
* is added to a collection, then it is first unwrapped from its
* TaskWrapper (via its getTask method), and then added to a
* new TaskWrapper for the collection it is added to.
*
* In this way, when the TaskWrapper is finally executed, the
* task's rollback and completion handlers will be registered on
* whichever collection it was registered on.
*/
public function __construct(Collection $collection, TaskInterface $task, TaskInterface $rollbackTask = null)
{
$this->collection = $collection;
$this->task = $task instanceof self ? $task->getTask() : $task;
$this->rollbackTask = $rollbackTask;
}
