@Override
  public void resolveEntryPoints(@NotNull final RefManager manager) {
    if (!myResolved) {
      myResolved = true;
      cleanup();
      validateEntryPoints();

      ApplicationManager.getApplication()
          .runReadAction(
              () -> {
                for (SmartRefElementPointer entryPoint : myPersistentEntryPoints.values()) {
                  if (entryPoint.resolve(manager)) {
                    RefEntity refElement = entryPoint.getRefElement();
                    ((RefElementImpl) refElement).setEntry(true);
                    ((RefElementImpl) refElement).setPermanentEntry(entryPoint.isPersistent());
                  }
                }

                for (ClassPattern pattern : myPatterns) {
                  final RefEntity refClass =
                      manager.getReference(RefJavaManager.CLASS, pattern.pattern);
                  if (refClass != null) {
                    for (RefMethod constructor : ((RefClass) refClass).getConstructors()) {
                      ((RefMethodImpl) constructor).setEntry(true);
                      ((RefMethodImpl) constructor).setPermanentEntry(true);
                    }
                  }
                }
              });
    }
  }
 @Override
 public void cleanup() {
   purgeTemporaryEntryPoints();
   Collection<SmartRefElementPointer> entries = myPersistentEntryPoints.values();
   for (SmartRefElementPointer entry : entries) {
     entry.freeReference();
   }
 }
  @NotNull
  @Override
  public RefElement[] getEntryPoints() {
    validateEntryPoints();
    List<RefElement> entries = new ArrayList<RefElement>();
    Collection<SmartRefElementPointer> collection = myPersistentEntryPoints.values();
    for (SmartRefElementPointer refElementPointer : collection) {
      final RefEntity elt = refElementPointer.getRefElement();
      if (elt instanceof RefElement) {
        entries.add((RefElement) elt);
      }
    }
    entries.addAll(myTemporaryEntryPoints);

    return entries.toArray(new RefElement[entries.size()]);
  }
  @SuppressWarnings({"HardCodedStringLiteral"})
  public static void writeExternal(
      final Element element,
      final Map<String, SmartRefElementPointer> persistentEntryPoints,
      final JDOMExternalizableStringList additional_annotations) {
    Element entryPointsElement = new Element("entry_points");
    entryPointsElement.setAttribute(VERSION_ATTR, VERSION);
    for (SmartRefElementPointer entryPoint : persistentEntryPoints.values()) {
      assert entryPoint.isPersistent();
      entryPoint.writeExternal(entryPointsElement);
    }

    element.addContent(entryPointsElement);
    if (!additional_annotations.isEmpty()) {
      additional_annotations.writeExternal(element);
    }
  }
  private void validateEntryPoints() {
    long count = PsiManager.getInstance(myProject).getModificationTracker().getModificationCount();
    if (count != myLastModificationCount) {
      myLastModificationCount = count;
      Collection<SmartRefElementPointer> collection = myPersistentEntryPoints.values();
      SmartRefElementPointer[] entries =
          collection.toArray(new SmartRefElementPointer[collection.size()]);
      for (SmartRefElementPointer entry : entries) {
        RefElement refElement = (RefElement) entry.getRefElement();
        if (refElement != null && !refElement.isValid()) {
          myPersistentEntryPoints.remove(entry.getFQName());
        }
      }

      final Iterator<RefElement> it = myTemporaryEntryPoints.iterator();
      while (it.hasNext()) {
        RefElement refElement = it.next();
        if (!refElement.isValid()) {
          it.remove();
        }
      }
    }
  }