code: func (obj *Doc) CloneBookmark(ctx context.Context, id string) (string, error) {
  	result := &struct {
  		CloneId string	`json:"qCloneId"`
  	} {}
  	err := obj.rpc(ctx, "CloneBookmark", result, id)
  	return result.CloneId, err 
  }
docs: // Clones a bookmark.
  // The identifier is set by the engine.
  //
  // Parameters:
  //
  // ◾ id   -   Identifier of the object to clone.
  //