throttle<R> method
Emits a value from this Observable, then ignores values for the duration
until the Observable returned by durationSelector
triggers a value or
completes.
Implementation
Observable<T> throttle<R>(DurationSelector<T, R> durationSelector,
{bool leading = true, bool trailing = true}) =>
ThrottleObservable<T, R>(this, durationSelector, leading, trailing);