@Nullable
 public String getQualifiedName(final RefEntity refEntity) {
   if (refEntity instanceof RefJavaElement && ((RefJavaElement) refEntity).isSyntheticJSP()) {
     return XmlStringUtil.escapeString(refEntity.getName());
   } else if (refEntity instanceof RefMethod) {
     PsiMethod psiMethod = (PsiMethod) ((RefMethod) refEntity).getElement();
     if (psiMethod != null) {
       return psiMethod.getName();
     } else {
       return refEntity.getName();
     }
   }
   return null;
 }
  @Override
  public Element export(
      @NotNull RefEntity refEntity, @NotNull final Element element, final int actualLine) {
    refEntity = getRefinedElement(refEntity);

    Element problem = new Element("problem");

    if (refEntity instanceof RefElement) {
      final RefElement refElement = (RefElement) refEntity;
      final SmartPsiElementPointer pointer = refElement.getPointer();
      PsiFile psiFile = pointer.getContainingFile();
      if (psiFile == null) return null;

      Element fileElement = new Element("file");
      Element lineElement = new Element("line");
      final VirtualFile virtualFile = psiFile.getVirtualFile();
      LOG.assertTrue(virtualFile != null);
      fileElement.addContent(virtualFile.getUrl());

      if (actualLine == -1) {
        final Document document =
            PsiDocumentManager.getInstance(pointer.getProject()).getDocument(psiFile);
        LOG.assertTrue(document != null);
        final Segment range = pointer.getRange();
        lineElement.addContent(
            String.valueOf(
                range != null ? document.getLineNumber(range.getStartOffset()) + 1 : -1));
      } else {
        lineElement.addContent(String.valueOf(actualLine));
      }

      problem.addContent(fileElement);
      problem.addContent(lineElement);

      appendModule(problem, refElement.getModule());
    } else if (refEntity instanceof RefModule) {
      final RefModule refModule = (RefModule) refEntity;
      final VirtualFile moduleFile = refModule.getModule().getModuleFile();
      final Element fileElement = new Element("file");
      fileElement.addContent(moduleFile != null ? moduleFile.getUrl() : refEntity.getName());
      problem.addContent(fileElement);
      appendModule(problem, refModule);
    }

    for (RefManagerExtension extension : myExtensions.values()) {
      extension.export(refEntity, problem);
    }

    new SmartRefElementPointerImpl(refEntity, true).writeExternal(problem);
    element.addContent(problem);
    return problem;
  }
  @Override
  @Nullable
  public String getGroupName(final RefElement entity) {
    for (RefManagerExtension extension : myExtensions.values()) {
      final String groupName = extension.getGroupName(entity);
      if (groupName != null) return groupName;
    }

    final LinkedList<String> containingDirs = new LinkedList<>();
    RefEntity parent = entity.getOwner();
    while (parent != null && !(parent instanceof RefDirectory)) {
      parent = parent.getOwner();
    }
    while (parent instanceof RefDirectory) {
      containingDirs.addFirst(parent.getName());
      parent = parent.getOwner();
    }
    return containingDirs.isEmpty() ? null : StringUtil.join(containingDirs, File.separator);
  }
  public void appendReferencePresentation(
      RefEntity refElement, final StringBuffer buf, final boolean isPackageIncluded) {
    if (refElement instanceof RefImplicitConstructor) {
      buf.append(InspectionsBundle.message("inspection.export.results.implicit.constructor"));
      refElement = ((RefImplicitConstructor) refElement).getOwnerClass();
    }

    buf.append(HTMLComposerImpl.CODE_OPENING);

    if (refElement instanceof RefField) {
      RefField field = (RefField) refElement;
      PsiField psiField = field.getElement();
      buf.append(psiField.getType().getPresentableText());
      buf.append(HTMLComposerImpl.NBSP);
    } else if (refElement instanceof RefMethod) {
      RefMethod method = (RefMethod) refElement;
      PsiMethod psiMethod = (PsiMethod) method.getElement();
      PsiType returnType = psiMethod.getReturnType();

      if (returnType != null) {
        buf.append(returnType.getPresentableText());
        buf.append(HTMLComposerImpl.NBSP);
      }
    }

    buf.append(HTMLComposerImpl.A_HREF_OPENING);

    if (myComposer.myExporter == null) {
      buf.append(((RefElementImpl) refElement).getURL());
    } else {
      buf.append(myComposer.myExporter.getURL(refElement));
    }

    buf.append("\">");

    if (refElement instanceof RefClass && ((RefClass) refElement).isAnonymous()) {
      buf.append(InspectionsBundle.message("inspection.reference.anonymous"));
    } else if (refElement instanceof RefJavaElement
        && ((RefJavaElement) refElement).isSyntheticJSP()) {
      buf.append(XmlStringUtil.escapeString(refElement.getName()));
    } else if (refElement instanceof RefMethod) {
      PsiMethod psiMethod = (PsiMethod) ((RefMethod) refElement).getElement();
      buf.append(psiMethod.getName());
    } else {
      buf.append(refElement.getName());
    }

    buf.append(HTMLComposerImpl.A_CLOSING);

    if (refElement instanceof RefMethod) {
      PsiMethod psiMethod = (PsiMethod) ((RefMethod) refElement).getElement();
      appendMethodParameters(buf, psiMethod, false);
    }

    buf.append(HTMLComposerImpl.CODE_CLOSING);

    if (refElement instanceof RefClass && ((RefClass) refElement).isAnonymous()) {
      buf.append(" ");
      buf.append(InspectionsBundle.message("inspection.export.results.anonymous.ref.in.owner"));
      buf.append(" ");
      myComposer.appendElementReference(
          buf, ((RefElement) refElement.getOwner()), isPackageIncluded);
    } else if (isPackageIncluded) {
      buf.append(" ").append(HTMLComposerImpl.CODE_OPENING).append("(");
      myComposer.appendQualifiedName(buf, refElement.getOwner());
      //      buf.append(RefUtil.getPackageName(refElement));
      buf.append(")").append(HTMLComposerImpl.CODE_CLOSING);
    }
  }