func ProduceCovList(profiles []*cover.Profile) *CoverageList {
	covList := newCoverageList("summary")
	for _, prof := range profiles {
		covList.Group = append(covList.Group, summarizeBlocks(prof))
	}
	return covList
}
func ProduceCovList(profiles []*cover.Profile) *CoverageList {
	covList := newCoverageList("summary")
	for _, prof := range profiles {
		covList.Group = append(covList.Group, summarizeBlocks(prof))
	}
	return covList
}
// ProduceCovList summarizes profiles and returns the result