public interface IAppearanceManager
{
...
    /// <summary>
    /// Resets the standard themes available through the theme settings interface.
    /// Method Adds Dark and Light theme infos from MLib - calling applications can
    /// use the AddThemeResources() method to add more resources.
    /// </summary>
    /// <param name="themes">Collection of themeinfos in which Dark and Light themes
    /// with MLib resources should be added.</param>
    /// <param name="removeAllThemeInfos">Determines whether existing collection
    /// of themeinfos is removed before addinng Dark and Light themes.</param>
    void SetDefaultThemes(IThemeInfos themes, bool removeAllThemeInfos = true);
...
}