// TODO
        //private void ButtonQueryStatus(object sender, EventArgs e)
        //{
        //    var button = (MenuCommand)sender;
        //    button.Visible = false;

        //    _serviceInfo.GetSelectedProjects();
        //}

        /// <summary>
        /// Click on the button 'Adjust namespaces'.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void MenuItemCallback(object sender, EventArgs e)
        {
            ThreadHelper.ThrowIfNotOnUIThread();

            try
            {
                var selectedItemPaths = _serviceInfo.SolutionSelectionService.GetSelectedItemsPaths();

                var allPaths = _serviceInfo.InnerPathFinder.GetAllInnerPaths(selectedItemPaths);

                if (!allPaths.Any())
                {
                    return;
                }

                var solutionFile = _package.GetSolutionFile();
                var projectFile  = ProjectHelper.GetProjectFilePath(allPaths[0]);

                _namespaceBuilder = NamespaceBuilderFactory.CreateNamespaceBuilderService(projectFile.Extension, _package.GetOptionPage());

                allPaths.ToList().ForEach(f => FixNamespace(f, solutionFile, projectFile));
            }
            finally
            {
                MsBuildEvaluationHelper.ClearCache();
            }
        }
        /// <summary>
        /// This function is the callback used to execute the command when the menu item is clicked.
        /// See the constructor to see how the menu item is associated with this function using
        /// OleMenuCommandService service and MenuCommand class.
        /// </summary>
        /// <param name="sender">Event sender.</param>
        /// <param name="e">Event args.</param>
        private void MenuItemCallback(object sender, EventArgs e)
        {
            var selectedItemPaths = _solutionSelectionService.GetSelectedItemsPaths();

            var allPaths = _innerPathFinder.GetAllInnerPaths(selectedItemPaths);

            if (!allPaths.Any())
            {
                return;
            }

            var projectFile  = ProjectHelper.GetProjectFilePath(allPaths[0]);
            var solutionFile = ProjectHelper.GetSolutionFilePath(projectFile.Directory.FullName);

            _namespaceBuilder = ServiceFactory.CreateNamespaceBuilderService(projectFile.Extension, _options);

            allPaths.ToList().ForEach(f => FixNamespace(f, solutionFile, projectFile));
        }