code: def move(self, parent, index=None):
          
          return self.db.move_group(self, parent, index=index)
docs: Move this group to a new parent.
          
          :param parent: The new parent group; if None will be root group.
          :type parent: :class:`keepassdb.model.Group`
          :param index: The 0-based index within the parent (defaults to appending
                        group to end of parent's children).
          :type index: int