@GetMapping("")
	public String download(PackageDownloadInfo packageDownloadInfo,
						   ModelMap modelMap,
						   HttpServletRequest request) {
		return downloadFile(packageDownloadInfo, modelMap, request);
	}
Download the latest agent.

@param packageDownloadInfo information for downloading agent.
@param request request.
ngrinder-controller/src/main/java/org/ngrinder/agent/controller/AgentDownloadController.java