code: func (s *ChangesService) ListFilesReviewed(changeID, revisionID string, opt *FilesOptions) ([]string, *Response, error) {
  	u := fmt.Sprintf("changes/%s/revisions/%s/files/", changeID, revisionID)
  
  	o := struct {
  		// The request parameter reviewed changes the response to return a list of the paths the caller has marked as reviewed.
  		Reviewed bool `url:"reviewed,omitempty"`
  
  		FilesOptions
  	}{
  		Reviewed: true,
  	}
  	if opt != nil {
  		o.FilesOptions = *opt
  	}
  	u, err := addOptions(u, o)
  	if err != nil {
  		return nil, nil, err
  	}
  
  	req, err := s.client.NewRequest("GET", u, nil)
  	if err != nil {
  		return nil, nil, err
  	}
  
  	var v []string
  	resp, err := s.client.Do(req, &v)
  	if err != nil {
  		return nil, resp, err
  	}
  
  	return v, resp, err
  }
docs: // ListFilesReviewed lists the files that were modified, added or deleted in a revision.
  // Unlike ListFiles, the response of ListFilesReviewed is a list of the paths the caller
  // has marked as reviewed. Clients that also need the FileInfo should make two requests.
  //
  // Gerrit API docs: https://gerrit-review.googlesource.com/Documentation/rest-api-changes.html#list-files