Connectivity
constructor(cloudSqlInstance: String? = null, forwardingRule: String? = null, fqdn: String? = null, gkeMasterCluster: String? = null, instance: String? = null, ipAddress: String? = null, network: String? = null, port: Int? = null, projectId: String? = null, redisCluster: String? = null, redisInstance: String? = null)