code: public static CombinationAnnotationElement toCombination(AnnotatedElement annotationEle) {
  		if(annotationEle instanceof CombinationAnnotationElement) {
  			return (CombinationAnnotationElement)annotationEle;
  		}
  		return new CombinationAnnotationElement(annotationEle);
  	}
docs: 将指定的被注解的元素转换为组合注解元素
  
  @param annotationEle 注解元素
  @return 组合注解元素