Kotlin上的Android Retrofit如何在响应中添加时间戳？

import okhttp3.Interceptor
import okhttp3.Response
import java.io.IOException

class TimestampInterceptor : Interceptor {
    @Throws(IOException::class)
    override fun intercept(chain: Interceptor.Chain): Response {
        val originalResponse = chain.proceed(chain.request())
        val currentTime = System.currentTimeMillis()
        val modifiedResponse = originalResponse.newBuilder()
            .header("Timestamp", currentTime.toString())
            .build()
        return modifiedResponse
    }
}

val okHttpClient = OkHttpClient.Builder()
    .addInterceptor(TimestampInterceptor())
    .build()

val retrofit = Retrofit.Builder()
    .baseUrl(BASE_URL)
    .client(okHttpClient)
    .addConverterFactory(GsonConverterFactory.create())
    .build()

val apiService = retrofit.create(ApiService::class.java)