errors/http.go
func HTTPStatusCode(err error) int {
	e, ok := err.(Error)
	if ok {
		return e.Type().HTTPStatusCode()
	}

	return http.StatusInternalServerError
}
func HTTPStatusCode(err error) int {
	e, ok := err.(Error)
	if ok {
		return e.Type().HTTPStatusCode()
	}

	return http.StatusInternalServerError
}
// HTTPStatusCode returns the HTTP status code for the given error or 500 if it doesn't know