Retrofit Client Builder

ApiService.kt

object ApiService {
    private val TAG = "--ApiService"

    fun loginApiCall() = Retrofit.Builder()
            .baseUrl(Constants.API_BASE_PATH)
            .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
            .addConverterFactory(ApiWorker.gsonConverter)
            .client(ApiWorker.client)
            .build()
            .create(LoginApiService::class.java)!!
}