private static void checkAnnotationsJarAttached(@NotNull LocalInspectionToolSession session) {
    PsiFile file = session.getFile();
    final Project project = file.getProject();
    PsiClass event =
        JavaPsiFacade.getInstance(project)
            .findClass("java.awt.event.InputEvent", GlobalSearchScope.allScope(project));
    if (event == null) return; // no jdk to attach
    PsiMethod[] methods = event.findMethodsByName("getModifiers", false);
    if (methods.length != 1) return; // no jdk to attach
    PsiMethod getModifiers = methods[0];
    PsiAnnotation annotation =
        ExternalAnnotationsManager.getInstance(project)
            .findExternalAnnotation(getModifiers, MagicConstant.class.getName());
    if (annotation != null) return;
    final VirtualFile virtualFile = PsiUtilCore.getVirtualFile(getModifiers);
    if (virtualFile == null) return; // no jdk to attach
    final List<OrderEntry> entries =
        ProjectRootManager.getInstance(project).getFileIndex().getOrderEntriesForFile(virtualFile);
    Sdk jdk = null;
    for (OrderEntry orderEntry : entries) {
      if (orderEntry instanceof JdkOrderEntry) {
        jdk = ((JdkOrderEntry) orderEntry).getJdk();
        if (jdk != null) break;
      }
    }
    if (jdk == null) return; // no jdk to attach

    if (!ApplicationManager.getApplication().isUnitTestMode()) {
      final Sdk finalJdk = jdk;
      ApplicationManager.getApplication()
          .invokeLater(
              new Runnable() {
                @Override
                public void run() {
                  ApplicationManager.getApplication()
                      .runWriteAction(
                          new Runnable() {
                            public void run() {
                              attachJdkAnnotations(finalJdk);
                            }
                          });
                }
              },
              ModalityState.NON_MODAL,
              project.getDisposed());
    }
  }
  // need to shorten references in type argument list
  public static void shortenReference(final PsiFile file, final int offset)
      throws IncorrectOperationException {
    Project project = file.getProject();
    final PsiDocumentManager manager = PsiDocumentManager.getInstance(project);
    Document document = manager.getDocument(file);
    if (document == null) {
      PsiUtilCore.ensureValid(file);
      LOG.error("No document for " + file);
      return;
    }

    manager.commitDocument(document);
    final PsiReference ref = file.findReferenceAt(offset);
    if (ref != null) {
      PsiElement element = ref.getElement();
      if (element != null) {
        JavaCodeStyleManager.getInstance(project).shortenClassReferences(element);
        PsiDocumentManager.getInstance(project).doPostponedOperationsAndUnblockDocument(document);
      }
    }
  }
  public PsiFile[] getRelatedFiles(final XPathFile file) {

    final XmlAttribute attribute = PsiTreeUtil.getContextOfType(file, XmlAttribute.class, false);
    assert attribute != null;

    final PsiFile psiFile = attribute.getContainingFile();
    assert psiFile != null;

    final List<PsiFile> files = new ArrayList<PsiFile>();

    psiFile.accept(
        new XmlRecursiveElementVisitor() {
          @Override
          public void visitXmlAttribute(XmlAttribute attribute) {
            final PsiFile[] _files = XsltSupport.getFiles(attribute);
            for (PsiFile _file : _files) {
              if (_file != file) files.add(_file);
            }
          }
        });

    return PsiUtilCore.toPsiFileArray(files);
  }