Changing the scheme of System.Uri

Question

I\'m looking for canonical way of changing scheme of a given System.Uri instance with System.UriBuilder without crappy string manipulations and magic constants. Say I have

Answer 1

Ended up with this one:

var uriBuilder = new UriBuilder(requestUrl)
{
    Scheme = Uri.UriSchemeHttps,
    Port = -1 // default port for scheme
};