public void LoadUtilityViewModel(UtilityViewModel viewModel)
 {
     CurrentUtilityViewModel = viewModel;
 }
 public void ChangeUtilityViewModel(UtilityViewModel viewModel)
 {
     ChangeUtility(viewModel);
 }
 protected void ChangeUtility(UtilityViewModel viewModel)
 {
     MainViewModel.LoadUtilityViewModel(viewModel);
 }