public static TRequest ReRequest <TRequest>([NotNull] this ResponseBase <TRequest> response)
where TRequest : RequestBase, IReRequestable
{
String etag;
if (response.DoesProvideEtagt(out etag))
{
response.OriginalRequest.ETag = etag;
return(response.OriginalRequest);
}
throw new ResponseDoesNotProvideEtagException(response);
}