protected ProblemDescriptor @Nullable [] checkFile(@NotNull PsiFile file,
                                                     @NotNull Document document,
                                                     @NotNull InspectionManager manager,
                                                     boolean isOnTheFly) {
    return null;
  }
protected ProblemDescriptor @Nullable [] checkFile(@NotNull PsiFile file,
                                                     @NotNull Document document,
                                                     @NotNull InspectionManager manager,
                                                     boolean isOnTheFly)