asMutableSet

Wraps this ScatterSet with a MutableSet interface. The MutableSet is backed by the ScatterSet, so changes to the ScatterSet are reflected in the MutableSet and vice-versa. If the ScatterSet is modified while an iteration over the MutableSet is in progress (and vice- versa), the results of the iteration are undefined.

Note: while this method is useful to use this MutableScatterSet with APIs accepting MutableSet interfaces, it is less efficient to do so than to use MutableScatterSet's APIs directly. While the MutableSet implementation returned by this method tries to be as efficient as possible, the semantics of MutableSet may require the allocation of temporary objects for access and iteration.