public String getMd5() {
			return md5;
		}
recommend to use
{@link NacosRefreshHistory#addRefreshRecord(java.lang.String, java.lang.String, java.lang.String)}.
@param dataId dataId
@param md5 md5
spring-cloud-alibaba-starters/spring-alibaba-nacos-config/src/main/java/com/alibaba/cloud/nacos/refresh/NacosRefreshHistory.java