src/main/java/io/reactivex/Observable.java
@CheckReturnValue
    @SchedulerSupport(SchedulerSupport.NONE)
    public final Observable<T> doAfterTerminate(Action onFinally) {
        ObjectHelper.requireNonNull(onFinally, "onFinally is null");
        return doOnEach(Functions.emptyConsumer(), Functions.emptyConsumer(), Functions.EMPTY_ACTION, onFinally);
    }
@CheckReturnValue
    @SchedulerSupport(SchedulerSupport.NONE)
    public final Observable<T> doAfterTerminate(Action onFinally) {
        ObjectHelper.requireNonNull(onFinally, "onFinally is null");
        return doOnEach(Functions.emptyConsumer(), Functions.emptyConsumer(), Functions.EMPTY_ACTION, onFinally);
    }
@ CheckReturnValue @ SchedulerSupport ( SchedulerSupport . NONE ) public final Observable < T > doAfterTerminate ( Action onFinally ) { ObjectHelper . requireNonNull ( onFinally , "onFinally is null" ) ; return doOnEach ( Functions . emptyConsumer ( ) , Functions . emptyConsumer ( ) , Functions . EMPTY_ACTION , onFinally ) ; }
Registers an {@link Action} to be called when this ObservableSource invokes either
{@link Observer#onComplete onComplete} or {@link Observer#onError onError}.
<p>
<img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/doAfterTerminate.png" alt="">
<dl>
<dt><b>Scheduler:</b></dt>
<dd>{@code doAfterTerminate} does not operate by default on a particular {@link Scheduler}.</dd>
</dl>

@param onFinally
an {@link Action} to be invoked when the source ObservableSource finishes
@return an Observable that emits the same items as the source ObservableSource, then invokes the
{@link Action}
@see <a href="http://reactivex.io/documentation/operators/do.html">ReactiveX operators documentation: Do</a>
@see #doOnTerminate(Action)
Registers an { @link Action } to be called when this ObservableSource invokes either { @link Observer#onComplete onComplete } or { @link Observer#onError onError } . <p > <img width = 640 height = 310 src = https : // raw . github . com / wiki / ReactiveX / RxJava / images / rx - operators / doAfterTerminate . png alt = > <dl > <dt > <b > Scheduler : < / b > < / dt > <dd > { @code doAfterTerminate } does not operate by default on a particular { @link Scheduler } . < / dd > < / dl >