An encapsulation of the act of grouping or ungrouping calls.
- iOS 10.0+
- Mac Catalyst 13.0+
CXSet is a concrete subclass of
CXCall. When the user or the system groups a call with another call, the provider sends
provider(_: to its delegate. The provider’s delegate calls the
fulfill() method to indicate that the action was successfully performed. A group call allows more than two recipients to simultaneously communicate with one another.