How to share one instance of an Observable

SharingObservableInstance.java

ConnectableObservable<Foo> connectableFooObservable = fooObservable.share();

Observable
  .combineLatest(connectableFooObservable, obsA, (foo, a) -> { // do something })
  .subscribe();

Observable
  .combineLatest(connectableFooObservable, obsB, (foo, b) -> { // do something })
  .subscribe();

connectableFooObservable.connect();