Indicates whether the tracked progress is indeterminate.
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Progress is indeterminate when the value of both
completedUnitCount are zero.
NSProgress is KVO-compliant for this property, sending notifications on the same thread that updates the property.
A string identifying the kind of progress being made.
A dictionary of arbitrary values associated with the receiver.