4016 type ContactGroupsListCall struct {  struct
4026 func (r *ContactGroupsService) List() *ContactGroupsListCall {
4027 	c := &ContactGroupsListCall{s: r.s, urlParams_: make(gensupport.URLParams)}
4036 func (c *ContactGroupsListCall) GroupFields(groupFields string) *ContactGroupsListCall {  argument
4044 func (c *ContactGroupsListCall) PageSize(pageSize int64) *ContactGroupsListCall {  argument
4053 func (c *ContactGroupsListCall) PageToken(pageToken string) *ContactGroupsListCall {  argument
4061 func (c *ContactGroupsListCall) SyncToken(syncToken string) *ContactGroupsListCall {  argument
4069 func (c *ContactGroupsListCall) Fields(s ...googleapi.Field) *ContactGroupsListCall {  argument
4079 func (c *ContactGroupsListCall) IfNoneMatch(entityTag string) *ContactGroupsListCall {  argument
4087 func (c *ContactGroupsListCall) Context(ctx context.Context) *ContactGroupsListCall {  argument
4094 func (c *ContactGroupsListCall) Header() http.Header {  argument
4101 func (c *ContactGroupsListCall) doRequest(alt string) (*http.Response, error) {  argument
4131 func (c *ContactGroupsListCall) Do(opts ...googleapi.CallOption) (*ListContactGroupsResponse, error…  argument
4206 func (c *ContactGroupsListCall) Pages(ctx context.Context, f func(*ListContactGroupsResponse) error…  argument