Property :: isInstanceDeleting - Is currently selected instance going to be deleted?
The property returns, whether the currently selected instance is going to be deleted (true) or not (false). When deleting an instance, context functions should not read or access instance data or subordinated instances.
When no instance is selected, the property returns false. When the property handle is not valid, the property throws an exception.
Return value: Success ( bool )
The value is true when the function was executed successfully. Otherwise the value is set to false.