@Override
  public CommonProblemDescriptor @Nullable [] checkElement(
    @NotNull RefEntity refEntity,
    @NotNull AnalysisScope analysisScope,
    @NotNull InspectionManager inspectionManager,
    @NotNull GlobalInspectionContext globalInspectionContext) {
    if (!(refEntity instanceof RefClass refClass)) {
      return null;
    }
    if (refClass.isAnonymous() || refClass.isLocalClass() || refClass.isSyntheticJSP()) {
      return null;
    }
    final Set<RefClass> dependencies = DependencyUtils.calculateTransitiveDependenciesForClass(refClass);
    final Set<RefClass> dependents = DependencyUtils.calculateTransitiveDependentsForClass(refClass);
    final VirtualFile vFile = refClass.getPointer().getVirtualFile();
    if (ignoreInSameFile) {
      final Predicate<RefClass> filter = aClass -> aClass.getPointer().getVirtualFile().equals(vFile);
      dependencies.removeIf(filter);
      dependents.removeIf(filter);
    }
    final Set<RefClass> mutualDependents = new HashSet<>(dependencies);
    mutualDependents.retainAll(dependents);
    final int numMutualDependents = mutualDependents.size();
    if (numMutualDependents == 0) {
      return null;
    }
    final String errorString;
    if (numMutualDependents == 1) {
      final RefClass[] classes = mutualDependents.toArray(new RefClass[1]);
      errorString = InspectionGadgetsBundle.message("cyclic.class.dependency.1.problem.descriptor",
                                                    refEntity.getName(), classes[0].getExternalName());
    }
    else if (numMutualDependents == 2) {
      final RefClass[] classes = mutualDependents.toArray(new RefClass[2]);
      Arrays.sort(classes, RefEntityAlphabeticalComparator.getInstance());
      errorString = InspectionGadgetsBundle.message("cyclic.class.dependency.2.problem.descriptor",
                                                    refEntity.getName(), classes[0].getExternalName(), classes[1].getExternalName());
    }
    else {
      errorString = InspectionGadgetsBundle.message("cyclic.class.dependency.problem.descriptor",
                                                    refEntity.getName(), Integer.valueOf(numMutualDependents));
    }
    final PsiElement anchor = UDeclarationKt.getAnchorPsi(refClass.getUastElement());
    if (anchor == null) return null;
    return new CommonProblemDescriptor[]{
      inspectionManager.createProblemDescriptor(anchor, errorString, (LocalQuickFix)null,
                                                ProblemHighlightType.GENERIC_ERROR_OR_WARNING, false)
    };
  }
@Override
  public CommonProblemDescriptor @Nullable [] checkElement(
    @NotNull RefEntity refEntity,
    @NotNull AnalysisScope analysisScope,
    @NotNull InspectionManager inspectionManager,
    @NotNull GlobalInspectionContext globalInspectionContext)