When this property is set to true, this activity does not appear in activity queries or in the user interface.
The IsRemoved property is used to indicate that a specific occurrence of a recurrence has been removed. The associated activity essentially becomes a placeholder, signifying that a "gap" exists in the recurrence pattern, resulting in no activity appearing for that slot.
Target Platforms: Android 4.4+, iOS 8+
Development Environments: Visual Studio 2015+, Visual Studio for Mac Preview, Xamarin for Visual Studio 4.2+