in src/connector.ts [198:208]
constructor(opts: ConnectorOptions = {}) {
this.sqlAdminFetcher = new SQLAdminFetcher({
loginAuth: opts.auth,
sqlAdminAPIEndpoint: opts.sqlAdminAPIEndpoint,
universeDomain: opts.universeDomain,
userAgent: opts.userAgent,
});
this.instances = new CloudSQLInstanceMap(this.sqlAdminFetcher);
this.localProxies = new Set();
this.sockets = new Set();
}