/**
  * Intercept the given request chain to add the Approov token to an 'Approov-Token' header.
  *
  * @param chain the request chain to modify
  * @return the modified response, authenticated by Approov
  */
override fun intercept(chain: Interceptor.Chain): Response {

    val originalRequest = chain.request()
    val approovToken = ApproovAttestation.shared().fetchApproovTokenAndWait(originalRequest.url().toString()).token
    val approovRequest = originalRequest.newBuilder().addHeader("Approov-Token", approovToken).build()
    return chain.proceed(approovRequest)
}