protected static void addAnnotation(@NotNull PsiClass targetElement,
                                      String annotationClassName) {
    final PsiAnnotation newPsiAnnotation = PsiAnnotationUtil.createPsiAnnotation(targetElement, annotationClassName);

    addAnnotation(targetElement, newPsiAnnotation, annotationClassName);
  }
protected static void addAnnotation(@NotNull PsiClass targetElement,
                                      String annotationClassName)