docs: @Nonnull
    public static SimpleURL getStreamURL (@Nonnull final IRequestWebScopeWithoutResponse aRequestScope,
                                          @Nonnull @Nonempty final String sURL)
    {
      ValueEnforcer.notNull (aRequestScope, "RequestScope");
      ValueEnforcer.notEmpty (sURL, "URL");
  
      // If the URL is absolute, use it
      if (hasKnownProtocol (sURL))
        return new SimpleURL (sURL);
  
      final StringBuilder aPrefix = new StringBuilder (getStreamServletPath ());
      if (!StringHelper.startsWith (sURL, '/'))
        aPrefix.append ('/');
      return getURLWithContext (aRequestScope, aPrefix.append (sURL).toString ());
    }