code: func (endorsers Endorsers) Filter(f ExclusionFilter) Endorsers {
  	var res Endorsers
  	for _, e := range endorsers {
  		if !f.Exclude(*e) {
  			res = append(res, e)
  		}
  	}
  	return res
  }
docs: // Filter filters the endorsers according to the given ExclusionFilter