func (covList *CoverageList) Subset(prefix string) *CoverageList {
	s := newCoverageList("Filtered Summary")
	for _, c := range covList.Group {
		if strings.HasPrefix(c.Name, prefix) {
			covList.Group = append(covList.Group, c)
		}
	}
	return s
}
func (covList *CoverageList) Subset(prefix string) *CoverageList {
	s := newCoverageList("Filtered Summary")
	for _, c := range covList.Group {
		if strings.HasPrefix(c.Name, prefix) {
			covList.Group = append(covList.Group, c)
		}
	}
	return s
}
// Subset returns the subset obtained through applying filter