code: func Cache(bodyHandler http.Handler, expiration time.Duration) *nethttp.Handler {
  	return nethttp.NewHandler(bodyHandler, expiration)
  }
docs: // func When(cachedHandler *nethttp.Handler, claimFuncs, validFuncs)
  // | We could have something like this
  //  but this wouldn't work for 'XXXFunc' & fasthttp because they just returns a function |
  // Cache accepts two parameters
  // first is the http.Handler which you want to cache its result
  // the second is, optional, the cache Entry's expiration duration
  // if the expiration <=2 seconds then expiration is taken by the "cache-control's maxage" header
  // returns an http.Handler, which you can use as your default router or per-route handler
  //
  // All type of responses are cached, templates, json, text, anything.
  //
  // You can add validators with this function