75 	sb []sigHead
119 type sigHead struct {  struct
131 func (s *sigHead) unmarshal() error {  argument
140 	sb := make([]sigHead, len(methods))
142 		sb[i] = sigHead{
156 func (s *sigHead) assignMethod(p jose.Protected) error {  argument
172 	sigHead  anonMember
173 	Signatures []sigHead `json:"signatures,omitempty"`
283 	if err := g.sigHead.unmarshal(); err != nil {
286 	g.sigHead.clean = true
288 	if err := checkHeaders(jose.Header(g.sigHead.protected), g.sigHead.unprotected); err != nil {
292 	if err := g.sigHead.assignMethod(g.sigHead.protected); err != nil {
300 		sb:      []sigHead{g.sigHead},
330 	s := sigHead{
349 		sb:      []sigHead{s},