Retrofit - How to set Interceptor

Retrofit - How to set Interceptor.kt

var client: OkHttpClient = OkHttpClient.Builder().apply {
        connectTimeout(60, TimeUnit.SECONDS)
        readTimeout(60, TimeUnit.SECONDS)
        writeTimeout(60, TimeUnit.SECONDS)
        addInterceptor(HttpLoggingInterceptor().apply {
            level = HttpLoggingInterceptor.Level.BODY
        })
}.build()

Retrofit.Builder builder = new Retrofit.Builder()
        .baseUrl("http://localhost:3000/")
        .client(okHttpClient)
        .addConverterFactory(GsonConverterFactory.create())
        .addCallAdapterFactory(RxJava2CallAdapterFactory.create());