@Override
	public List<PerfTest> getAll(Date start, Date end, String region) {
		return perfTestRepository.findAllByCreatedAtAndRegion(start, end, region);
	}
Get files respectively if there are multiple tests.

@param testId test id
@param key    report key
@return return file list
ngrinder-controller/src/main/java/org/ngrinder/perftest/service/PerfTestService.java