Private
_disposedTest whether the set has been disposed.
Add a disposable item to the set.
Test whether the set contains a specific item.
The item of interest.
true
if the set contains the item, false
otherwise.
Dispose of the set and the items it contains.
Items are disposed in the order they are added to the set.
Remove a disposable item from the set.
An observable object which manages a collection of disposable items.