/// <summary>
/// Provides a deterministic way to create the GroupsListViewModel property.
/// </summary>
public static void CreateGroupsListViewModel()
{
if (_groupsListViewModel == null)
{
_groupsListViewModel = new GroupsListViewModel();
}
}
/// <summary>
/// Provides a deterministic way to delete the GroupsListViewModel property.
/// </summary>
public static void ClearGroupsListViewModel()
{
_groupsListViewModel.Cleanup();
_groupsListViewModel = null;
}