public void MarkSingleNotificationAsRead()
{
// Sign into Mars Portal
SignIn.OpenForm();
//Fill in credentials
SignIn.FillCredentials(7);
NotificationPage.ClickNotifications();
NotificationPage.SeeAllNotifications();
//Select a single notification
NotificationPage.SelectServiceRequest();
NotificationPage.MarkSelection();
//Assertion
NotificationPage.MarkAsReadAssertion();
}