/// <summary>
/// Save changes in IsChecked state for every node in TypeHierarchy.
/// </summary>
public static void SaveChanges()
{
foreach (TypeHierarchy node in EntityViewModelsManager.TypeHierarchyPlaneCollection)
{
node.IsCheckedSavedState = node.IsChecked;
}
EntityViewModelsManager.SaveViewPreset();
TypeHierarchySelectView.Close();
}