}

func ErrBadPatchType(t interface{}, m map[string]interface{}) error {
	return fmt.Errorf("unknown patch type: %s in map: %v", t, m)
}

// IsPreconditionFailed returns true if the provided error indicates
// a precondition failed.
func IsPreconditionFailed(err error) bool {
	_, ok := err.(ErrPreconditionFailed)
	return ok
}

type ErrPreconditionFailed struct {
	message string
}