private void tagProviderComboBox_ManageProviders(object sender, EventArgs e)
        {
            TagOptions         optionsForm = new TagOptions();
            TagProviderManager manager     = new TagProviderManager(_context.PluginSettings);

            optionsForm.Initialize(manager);
            optionsForm.SetContext(_context);
            optionsForm.ShowDialog(this);

            tagProviderComboBox.SetTagProviders(manager.TagProviders);
            tagProviderComboBox.SelectedTagProvider = _context.CurrentProvider;
        }