2.x: Add Maybe.hide() marble diagram (#6078)

Author: akarnokd

src/main/java/io/reactivex/Maybe.java

@@ -3090,6 +3090,8 @@ public final Completable flatMapCompletable(final Function<? super T, ? extends
 
     /**
      * Hides the identity of this Maybe and its Disposable.
+     * <p>
+     * <img width="640" height="300" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/Maybe.hide.png" alt="">
      * <p>Allows preventing certain identity-based
      * optimizations (fusion).
      * <dl>