@GetMapping("/{id}/download_csv")
	public void downloadCSV(User user, @PathVariable long id, HttpServletResponse response) {
		PerfTest test = getOneWithPermissionCheck(user, id, false);
		File targetFile = perfTestService.getCsvReportFile(test);
		checkState(targetFile.exists(), "File %s doesn't exist!", targetFile.getName());
		FileDownloadUtils.downloadFile(response, targetFile);
	}
Download the CSV report for the given perf test id.

@param user     user
@param id       test id
@param response response
ngrinder-controller/src/main/java/org/ngrinder/perftest/controller/PerfTestController.java