agent/acs/handler/refresh_credentials_handler.go
func (refreshHandler *refreshCredentialsHandler) ackMessage(ack *ecsacs.IAMRoleCredentialsAckRequest) {
	err := refreshHandler.acsClient.MakeRequest(ack)
	if err != nil {
		seelog.Warnf("Error 'ack'ing request with messageID: %s, error: %v", aws.StringValue(ack.MessageId), err)
	}
	seelog.Debugf("Acking credentials message: %s", ack.String())
}
func (refreshHandler *refreshCredentialsHandler) ackMessage(ack *ecsacs.IAMRoleCredentialsAckRequest) {
	err := refreshHandler.acsClient.MakeRequest(ack)
	if err != nil {
		seelog.Warnf("Error 'ack'ing request with messageID: %s, error: %v", aws.StringValue(ack.MessageId), err)
	}
	seelog.Debugf("Acking credentials message: %s", ack.String())
}
// ackMessageId sends an IAMRoleCredentialsAckRequest to the backend