simple_query_rxjava.kt

    val repositoriesQuery = GithubRepositoriesQuery.builder()
      .repositoriesCount(50)
      .orderBy(RepositoryOrderField.UPDATED_AT)
      .orderDirection(OrderDirection.DESC)
      .build()

    val callback = ApolloCallback.wrap(object : ApolloCall.Callback<GithubRepositoriesQuery.Data>() {
      override fun onResponse(response: Response<GithubRepositoriesQuery.Data>) {
        val repositories = mapResponseToRepositories(response)
        repositoriesAdapter.setItems(repositories)
      }

      override fun onFailure(e: ApolloException) {
        e.printStackTrace()
      }

    }, Handler(Looper.getMainLooper()))

    apolloClient
      .query(repositoriesQuery)
      .httpCachePolicy(HttpCachePolicy.CACHE_FIRST)
      .enqueue(callback)