private static ItemPresentation getContentPresentation(Project project, ServiceViewModel viewModel, ServiceViewState viewState) {
    if (viewModel instanceof ContributorModel) {
      return ((ContributorModel)viewModel).getContributor().getViewDescriptor(project).getContentPresentation();
    }
    else if (viewModel instanceof GroupModel) {
      return ((GroupModel)viewModel).getGroup().getViewDescriptor().getContentPresentation();
    }
    else if (viewModel instanceof SingeServiceModel) {
      return ((SingeServiceModel)viewModel).getService().getViewDescriptor().getContentPresentation();
    }
    else if (viewModel instanceof ServiceListModel) {
      List<ServiceViewItem> items = ((ServiceListModel)viewModel).getItems();
      if (items.size() == 1) {
        return items.get(0).getViewDescriptor().getContentPresentation();
      }
      String name = viewState.id;
      if (StringUtil.isEmpty(name)) {
        name = Messages.showInputDialog(project,
                                        ExecutionBundle.message("service.view.group.label"),
                                        ExecutionBundle.message("service.view.group.title"),
                                        null, null, null);
        if (StringUtil.isEmpty(name)) return null;
      }
      return new PresentationData(name, null, AllIcons.Nodes.Folder, null);
    }
    return null;
  }
private static ItemPresentation getContentPresentation(Project project, ServiceViewModel viewModel, ServiceViewState viewState)