static Observable<Integer> singleIntegerAfterDependencies(Query query) {
        return concatButIgnoreFirstSequence(query.depends(), Observable.just(1));
    }
static Observable < Integer > singleIntegerAfterDependencies ( Query query ) { return concatButIgnoreFirstSequence ( query . depends ( ) , Observable . just ( 1 ) ) ; }
Returns {@link Observable} with one item 1 but only after query
dependencies have been fully emitted (and ignored).

@param query

@return {@link Observable} with one element 1