httpTrafficObserverInterceptor
internal fun httpTrafficObserverInterceptor(observer: <Error class: unknown class>): <Error class: unknown class>
A network interceptor (added via OkHttpClient.Builder.addNetworkInterceptor) that hands the fully-prepared request and raw response - including bodies - to observer, then forwards them unmodified (aside from re-wrapping the response body, which OkHttp requires once its bytes have been read for inspection).