/// <summary>
        /// Raises the Navigated event synchronously.
        /// </summary>
        /// <param name="content">A reference to the object content that is being navigated to.</param>
        /// <param name="uri">A URI value representing the navigation content.</param>
        /// <param name="existingContentPage">The existing content cast to a Page</param>
        /// <param name="newContentPage">The new content cast to a Page</param>
        private void RaiseNavigated(object content, Uri uri, Page existingContentPage, Page newContentPage)
        {
            NavigatedEventHandler eventHandler = this.Navigated;

            if (eventHandler != null)
            {
                NavigationEventArgs eventArgs = new NavigationEventArgs(content, uri);
                eventHandler(this, eventArgs);
            }

            if (existingContentPage != null && content != null)
            {
                existingContentPage.InternalOnNavigatedFrom(new NavigationEventArgs(content, uri));
            }

            if (newContentPage != null)
            {
                newContentPage.InternalOnNavigatedTo(new NavigationEventArgs(content, uri));
            }
        }