BoredActivitiesAPI.java

import io.reactivex.Flowable;
import io.reactivex.Observable;
import io.reactivex.Single;
import retrofit2.http.GET;


public interface BoredActivitiesAPI {

    @GET("activity")
    Observable<BoredActivities> getObservableResponse();

    @GET("activity")
    Flowable<BoredActivities> getFlowableResponse();

    @GET("activity")
    Single<BoredActivities> getSingleResponse();
    
}