Get the current value of the observable.
OptionalinitialValue: ROptionalonError: (error: any) => voidOptionalonComplete: () => voidWait for the observable to complete.
Optional__namedParameters: { timeout?: number }Promise that resolves to the value of the observable at the time of completion.
StaticemptyStable reference to an observable that always returns undefined.
StaticfromStaticof
Base class for all invitation observables and providers.