<BUG>public final <U> Observable<U> flatMapIterable(final Function<? super T, ? extends Iterable<? extends U>> mapper, int bufferSize) {return flatMap(ObservableInternalHelper.flatMapIntoIterable(mapper), false, bufferSize);}@SchedulerSupport(SchedulerSupport.NONE)</BUG><CONTEXT>public final <U, V> Observable<V> flatMapIterable(final Function<? super T, ? extends Iterable<? extends U>> mapper,BiFunction<? super T, ? super U, ? extends V> resultSelector) {return flatMap(ObservableInternalHelper.flatMapIntoIterable(mapper), resultSelector, false, bufferSize(), bufferSize());}@SchedulerSupport(SchedulerSupport.NONE)<extra_id_0>public final <R> Observable<R> flatMapMaybe(Function<? super T, ? extends MaybeSource<? extends R>> mapper) {</CONTEXT>
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