@@ -0,0 +1,577 @@
+package com.morihacky.android.rxjava;%0A%0Aimport rx.Subscription;%0Aimport rx.subscriptions.CompositeSubscription;%0A%0Apublic class RxUtils %7B%0A%0A    public static void unsubscribeIfNotNull(Subscription subscription) %7B%0A        if (subscription != null) %7B%0A            subscription.unsubscribe();%0A        %7D%0A    %7D%0A%0A    public static CompositeSubscription getNewCompositeSubIfUnsubscribed(CompositeSubscription subscription) %7B%0A        if (subscription == null %7C%7C subscription.isUnsubscribed()) %7B%0A            return new CompositeSubscription();%0A        %7D%0A%0A        return subscription;%0A    %7D%0A%7D%0A

add my RxUtils class with CompositeSubscription helpers