code: def update(self, name=None, description=None, image_url=None,
                 office_mode=None, share=None, **kwargs):
          
          # note we default to the current values for name and office_mode as a
          # work-around for issues with the group update endpoint
          if name is None:
              name = self.name
          if office_mode is None:
              office_mode = self.office_mode
          return self.manager.update(id=self.id, name=name, description=description,
                                     image_url=image_url, office_mode=office_mode,
                                     share=share, **kwargs)
docs: Update the details of the group.
  
          :param str name: group name (140 characters maximum)
          :param str description: short description (255 characters maximum)
          :param str image_url: GroupMe image service URL
          :param bool office_mode: (undocumented)
          :param bool share: whether to generate a share URL
          :return: an updated group
          :rtype: :class:`~groupy.api.groups.Group`