@Nullable
  private String suggestJarName() {
    final List<PackagingSourceItem> items = mySourceItemsTree.getSelectedItems();
    for (PackagingSourceItem item : items) {
      if (item.isProvideElements() && item.getKindOfProducedElements().containsDirectoriesWithClasses()) {
        return item.createPresentation(myArtifactEditor.getContext()).getPresentableName();
      }
    }
    return null;
  }
@Nullable
  private String suggestJarName()