Method test

src/main/java/io/reactivex/rxjava3/core/Maybe.java:6075–6082

Creates a TestObserver and subscribes it to this Maybe. Scheduler: test does not operate by default on a particular Scheduler. @return the new TestObserver instance

()

     * @return the new {@code TestObserver} instance
     */
    @CheckReturnValue
    @SchedulerSupport(SchedulerSupport.NONE)
    @NonNull
    public final TestObserver<T> test() {
        TestObserver<T> to = new TestObserver<>();
        subscribe(to);
        return to;
    }

    /**
     * Creates a {@link TestObserver} optionally in cancelled state, then subscribes it to this {@code Maybe}.