private static StringBuilder getShortClassName(@NotNull PsiClass aClass, @NotNull StringBuilder builder) {
      final PsiClass containingClass = aClass.getContainingClass();
      if (containingClass != null) {
        getShortClassName(containingClass, builder);
        builder.append('.');
      }
      builder.append(aClass.getName());
      return builder;
    }
private static StringBuilder getShortClassName(@NotNull PsiClass aClass, @NotNull StringBuilder builder)