// `jwt:groups` works.
	if grpsVal, ok := claims["groups"]; ok {
		if grpsIs, ok := grpsVal.([]interface{}); ok {
			grps := []string{}
			for _, gI := range grpsIs {
				if g, ok := gI.(string); ok {
					grps = append(grps, g)
				}
			}
			if len(grps) > 0 {
				args["groups"] = grps
			}
		}
	}