agent/acs/handler/refresh_credentials_handler.go
func (refreshHandler *refreshCredentialsHandler) handleMessages() {
	for {
		select {
		case message := <-refreshHandler.messageBuffer:
			refreshHandler.handleSingleMessage(message)
		case <-refreshHandler.ctx.Done():
			return
		}
	}
}
func (refreshHandler *refreshCredentialsHandler) handleMessages() {
	for {
		select {
		case message := <-refreshHandler.messageBuffer:
			refreshHandler.handleSingleMessage(message)
		case <-refreshHandler.ctx.Done():
			return
		}
	}
}
// handleMessages processes refresh credentials messages in the buffer in-order