INavigationService.cs

public interface INavigationService
{
    event EventHandler<PageEventArgs> Navigated;

    string Url { get; }

    string Title { get; }

    void Navigate(string relativeUrl, string currentLocation, bool sslEnabled = false);

    void NavigateByAbsoluteUrl(string absoluteUrl, bool useDecodedUrl = true);

    void Navigate(string currentLocation, bool sslEnabled = false);

    void WaitForUrl(string url);

    void WaitForPartialUrl(string url);
}