title: Disable Cache of okhttp
body: <p>i know to disable cache of okhttp is to call <code>Request.cacheControl(CacheControl.FORCE_NETWORK)</code>. Is it possible to set the cacheControl from OkHttpClient.class? Because i have 1 client for all my request. So i want to disable cache for all the request by disabling it from the okhttpClient</p>