code: func AuthGroupPermissionByGroupIDPermissionID(db XODB, groupID float64, permissionID float64) (*AuthGroupPermission, error) {
  	var err error
  
  	// sql query
  	const sqlstr = `SELECT ` +
  		`id, group_id, permission_id ` +
  		`FROM django.auth_group_permissions ` +
  		`WHERE group_id = :1 AND permission_id = :2`
  
  	// run query
  	XOLog(sqlstr, groupID, permissionID)
  	agp := AuthGroupPermission{
  		_exists: true,
  	}
  
  	err = db.QueryRow(sqlstr, groupID, permissionID).Scan(&agp.ID, &agp.GroupID, &agp.PermissionID)
  	if err != nil {
  		return nil, err
  	}
  
  	return &agp, nil
  }
docs: // AuthGroupPermissionByGroupIDPermissionID retrieves a row from 'django.auth_group_permissions' as a AuthGroupPermission.
  //
  // Generated from index 'auth_gr_group_id_0cd325b0_uniq'.