prow/repoowners/repoowners.go
func (a RepoAliases) ExpandAlias(alias string) sets.String {
	if a == nil {
		return nil
	}
	return a[github.NormLogin(alias)]
}
func (a RepoAliases) ExpandAlias(alias string) sets.String {
	if a == nil {
		return nil
	}
	return a[github.NormLogin(alias)]
}
// ExpandAlias returns members of an alias