prow/plugins/approve/approvers/owners.go
func (ap *Approvers) AddLGTMer(login, reference string, noIssue bool) {
	if ap.shouldNotOverrideApproval(login, noIssue) {
		return
	}
	ap.approvers[strings.ToLower(login)] = Approval{
		Login:     login,
		How:       "LGTM",
		Reference: reference,
		NoIssue:   noIssue,
	}
}
func (ap *Approvers) AddLGTMer(login, reference string, noIssue bool) {
	if ap.shouldNotOverrideApproval(login, noIssue) {
		return
	}
	ap.approvers[strings.ToLower(login)] = Approval{
		Login:     login,
		How:       "LGTM",
		Reference: reference,
		NoIssue:   noIssue,
	}
}
// AddLGTMer adds a new LGTM Approver