return nil, errors.New("no authentication mechanism was provided")
	}

	if conf.Bucket == "" {
		return nil, errors.New("no bucket name was provided")
	}

	if conf.IsSPEnabled() {
		credential, err = newCredentialFromSP(conf)
	} else {
		credential, err = azblob.NewSharedKeyCredential(conf.AccountName, conf.AccountKey)
	}
	if err != nil {