public S setApplication(ApplicationConfig application) {
        if (application == null) {
            application = new ApplicationConfig();
        }
        this.application = application;
        return castThis();
    }
Sets interface id.

@param interfaceId the interface id
@return the interface id
core/api/src/main/java/com/alipay/sofa/rpc/config/AbstractInterfaceConfig.java