@Override
	public String toString() {
		return "NacosConfigProperties{" + "serverAddr='" + serverAddr + '\''
				+ ", encode='" + encode + '\'' + ", group='" + group + '\'' + ", prefix='"
				+ prefix + '\'' + ", fileExtension='" + fileExtension + '\''
				+ ", timeout=" + timeout + ", maxRetry='" + maxRetry + '\''
				+ ", configLongPollTimeout='" + configLongPollTimeout + '\''
				+ ", configRetryTime='" + configRetryTime + '\''
				+ ", enableRemoteSyncConfig=" + enableRemoteSyncConfig + ", endpoint='"
				+ endpoint + '\'' + ", namespace='" + namespace + '\'' + ", accessKey='"
				+ accessKey + '\'' + ", secretKey='" + secretKey + '\''
				+ ", ramRoleName='" + ramRoleName + '\'' + ", contextPath='" + contextPath
				+ '\'' + ", clusterName='" + clusterName + '\'' + ", name='" + name + '\''
				+ '\'' + ", shares=" + sharedConfigs + ", extensions=" + extensionConfigs
				+ ", refreshEnabled=" + refreshEnabled + '}';
	}
refer
https://github.com/alibaba/spring-cloud-alibaba/issues/2872
https://github.com/alibaba/spring-cloud-alibaba/issues/2869 .
spring-cloud-alibaba-starters/spring-alibaba-nacos-config/src/main/java/com/alibaba/cloud/nacos/NacosConfigProperties.java