code: func (call *GetGroupMemberIDsCall) Do() (*MemberIDsResponse, error) {
  	endpoint := fmt.Sprintf(APIEndpointGetGroupMemberIDs, call.groupID)
  	var q url.Values
  	if call.continuationToken != "" {
  		q = url.Values{"start": []string{call.continuationToken}}
  	}
  	res, err := call.c.get(call.ctx, endpoint, q)
  	if err != nil {
  		return nil, err
  	}
  	defer closeResponse(res)
  	return decodeToMemberIDsResponse(res)
  }
docs: // Do method