docs: def get_group_attributegroup_items(network_id, group_id, **kwargs):
      """
          Get all the items in a specified group, within a network
      """
      user_id=kwargs.get('user_id')
  
      network_i = _get_network(network_id)
  
      network_i.check_read_permission(user_id)
  
      group_items_i = db.DBSession.query(AttrGroupItem).filter(
                                      AttrGroupItem.network_id==network_id,
                                      AttrGroupItem.group_id==group_id).all()
  
      return group_items_i