oolean validateAnnotationOnRightType(@NotNull PsiClass psiClass, @NotNull ProblemSink builder) {
    if (isNotSupported(psiClass)) {
      builder.addErrorMessage("inspection.message.builder.can.be.used.only");
      return false;
    }
    return true;
  }

oolean validateAnnotationOnRightType(@NotNull PsiClass psiClass, @NotNull ProblemSink builder) 