Spring-Cloud-Alibaba/spring-cloud-alibaba-nacos-discovery/src/main/resources/META-INF/additional-spring-configuration-metadata.json

{"properties": [
    {
      "name": "spring.cloud.nacos.discovery.service",
      "type": "java.lang.String",
      "defaultValue": "${spring.application.name}",
      "description": "the service name to register, default value is ${spring.application.name}."
    }
]}