Need support Amazon ElastiCache as broker or server

import "github.com/redis/go-redis/v9"
...
		opts.CredentialsProviderContext = func(ctx context.Context) (string, string, error) {
			token, err := gen.generate(ctx)
			if err != nil {
				return "", "", err
			}
			return cfg.Username, token, nil
		}
//...
	client := redis.NewClient(opts)

func NewGR(cnf *config.Config, addrs []string, db int) iface.Broker { // Issue here, not support custom 'CredentialsProviderContext'
	b := &BrokerGR{Broker: common.NewBroker(cnf)}

...