@Nullable
  private ProblemDescriptor[] checkMember(
      final PsiDocCommentOwner docCommentOwner,
      final InspectionManager manager,
      final boolean isOnTheFly) {
    final ArrayList<ProblemDescriptor> problems = new ArrayList<ProblemDescriptor>();
    final PsiDocComment docComment = docCommentOwner.getDocComment();
    if (docComment == null) return null;

    final Set<PsiJavaCodeReferenceElement> references = new HashSet<PsiJavaCodeReferenceElement>();
    docComment.accept(getVisitor(references, docCommentOwner, problems, manager, isOnTheFly));
    for (PsiJavaCodeReferenceElement reference : references) {
      final List<PsiClass> classesToImport = new ImportClassFix(reference).getClassesToImport();
      final PsiElement referenceNameElement = reference.getReferenceNameElement();
      problems.add(
          manager.createProblemDescriptor(
              referenceNameElement != null ? referenceNameElement : reference,
              cannotResolveSymbolMessage("<code>" + reference.getText() + "</code>"),
              !isOnTheFly || classesToImport.isEmpty() ? null : new AddImportFix(classesToImport),
              ProblemHighlightType.LIKE_UNKNOWN_SYMBOL,
              isOnTheFly));
    }

    return problems.isEmpty() ? null : problems.toArray(new ProblemDescriptor[problems.size()]);
  }
 public void applyFix(
     @NotNull final Project project, @NotNull final ProblemDescriptor descriptor) {
   final PsiElement element =
       PsiTreeUtil.getParentOfType(
           descriptor.getPsiElement(), PsiJavaCodeReferenceElement.class);
   if (element instanceof PsiJavaCodeReferenceElement) {
     final PsiJavaCodeReferenceElement referenceElement = (PsiJavaCodeReferenceElement) element;
     Collections.sort(
         myClassesToImport, new PsiProximityComparator(referenceElement.getElement()));
     final JList list =
         new JBList(myClassesToImport.toArray(new PsiClass[myClassesToImport.size()]));
     list.setCellRenderer(new FQNameCellRenderer());
     final Runnable runnable =
         new Runnable() {
           public void run() {
             if (!element.isValid()) return;
             final int index = list.getSelectedIndex();
             if (index < 0) return;
             new WriteCommandAction(project, element.getContainingFile()) {
               protected void run(final Result result) throws Throwable {
                 final PsiClass psiClass = myClassesToImport.get(index);
                 if (psiClass.isValid()) {
                   PsiDocumentManager.getInstance(project).commitAllDocuments();
                   referenceElement.bindToElement(psiClass);
                 }
               }
             }.execute();
           }
         };
     final AsyncResult<DataContext> asyncResult =
         DataManager.getInstance().getDataContextFromFocus();
     asyncResult.doWhenDone(
         new AsyncResult.Handler<DataContext>() {
           @Override
           public void run(DataContext dataContext) {
             final Editor editor = PlatformDataKeys.EDITOR.getData(dataContext);
             assert editor != null; // available for on the fly mode only
             new PopupChooserBuilder(list)
                 .setTitle(QuickFixBundle.message("class.to.import.chooser.title"))
                 .setItemChoosenCallback(runnable)
                 .createPopup()
                 .showInBestPositionFor(editor);
           }
         });
   }
 }