Url query params

@Query is used to add query params

    @GET("/users/repos")
    void fetchRepoBySearch(
          @Query("page") int pageNumber,
          @Query("sort") String sort,
          Callback<Repo> callback
    );

    service.fetchRepoBySearch(2,"asc", callback);
    //output url is ENDPOINT/users/repos?page=2&sort=asc

@QueryMap is used to add query params using a map

    @GET("/users/repos")
    void fetchRepoBySearch(
          @QueryMap Map queryParamsMap,
          Callback<Repo> callback
    );

    Map<String,String> map = new HashMap<>();
    map.put("sort","asc");
    map.put("offset", "100");

    service.fetchRepoBySearch(map, callback);