@Headers Annotaion در اندروید

سلام پوریا جان خوبی؟

به خاطر اینکه با استفاده از هدر به سرور همراه درخواستمون اطلاعاتی میدیم که سرور بفهمه مثلا چجوری بهت ریسپانس بده مثال زیر رو ببین:

object ApiServiceContainer {
    private var apiService: ApiService? = null
    fun getApiService(): ApiService {
        if (apiService == null) {
            val logging = HttpLoggingInterceptor()
            logging.level = HttpLoggingInterceptor.Level.BODY
            val httpClient = OkHttpClient.Builder()
            httpClient.addInterceptor { chain ->
                val original = chain.request()
                // Request customization: add request headers
                val requestBuilder = original.newBuilder()
                    .header("Authorization", "Bearer " + token) // <-- this is the important line
                    .header("Accept", "application/json")
                    .header("Content-Type", "application/json")
                val request = requestBuilder.build()
                chain.proceed(request)
            }
            httpClient.connectTimeout(30, TimeUnit.SECONDS)
            httpClient.readTimeout(30, TimeUnit.SECONDS)
            httpClient.addNetworkInterceptor(logging)
            val okHttpClient = httpClient.build()
            val gson = GsonBuilder()
                .setLenient()
                .create()
            val retrofit = Retrofit.Builder()
                .baseUrl(EndPoints.API_BASE_URL)
                .addConverterFactory(
                    GsonConverterFactory.create(gson))
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .client(okHttpClient)
                .build()
            apiService = retrofit.create(ApiService::class.java)
        }
        return apiService!!
    }
}