private void OpenFileExecuted(HierarchyItemViewModel viewModel)
 {
     if (viewModel is DocumentViewModel documentViewModel)
     {
         _openDocumentService.ActivateOrOpenDocument(documentViewModel);
     }
 }
        public override int CompareTo(HierarchyItemViewModel other)
        {
            if (other is FolderViewModel || other is ReferencesFolderViewModel)
            {
                return(1);
            }

            return(base.CompareTo(other));
        }
 private bool CanOpenFileExecute(HierarchyItemViewModel viewModel) => true;