package main import ( "github.com/dxtrleague/go-oauth2-mongo/v4" "github.com/go-oauth2/oauth2/v4/manage" ) func main() { manager := manage.NewDefaultManager() // use mongodb token store manager.MapTokenStorage( mongo.NewTokenStore(mongo.NewConfig( "mongodb://127.0.0.1:27017", "oauth2",	)),	) // ... }