file.java

private final class CompaniesObserver extends DefaultSubscriber<SearchResponseDomain> {
        @Override
        public void onCompleted() {
            super.onCompleted();
            getView().hideLoading();
            if(travleSimple)
                getView().showCompanies(departureTrip);
            else {

                combineResults(departureTrip,returnTrip);
            }
        }

        @Override
        public void onError(Throwable e) {
            super.onError(e);
            getView().hideLoading();
            networkError.setError(e);
            getView().hideLoading();
            getView().showError(networkError.getAppErrorMessage());

        }

        @Override
        public void onNext(SearchResponseDomain searchResponseDomain) {
            super.onNext(searchResponseDomain);
            departureTrip = searchMapper.reverseMap(searchResponseDomain);
        }
    }

//--------------------------------------------------------------------------//
 private final class CompaniesTravelDoubleObserver extends DefaultSubscriber<SearchResponseDomain> {
        @Override
        public void onCompleted() {
            super.onCompleted();
            combineResults(departureTrip,returnTrip);
            getView().hideLoading();
        }

        @Override
        public void onError(Throwable e) {
            super.onError(e);
            getView().hideLoading();
            networkError.setError(e);
            getView().hideLoading();
            getView().showError(networkError.getAppErrorMessage());

        }

        @Override
        public void onNext(SearchResponseDomain searchResponseDomain) {
            super.onNext(searchResponseDomain);
            returnTrip = searchMapper.reverseMap(searchResponseDomain);
        }
    }
//-----------------------------------------------------------//
 public void combineResults(SearchResponsePresentation departureTrip,SearchResponsePresentation returnTrip){

        if(departureTrip != null && returnTrip != null){
            getView().hideLoading();
            getView().showCompanies(departureTrip,returnTrip );
        }
    }