util/errors/error.go
func Message(e Error) (string, bool) {
	msg, ok := msgs[e]
	return msg, ok
}
func Message(e Error) (string, bool) {
	msg, ok := msgs[e]
	return msg, ok
}
func Message ( e Error ) ( string , bool ) { msg , ok := msgs [ e ] return msg , ok }
// Message returns an error message from a given error code.
Message returns an error message from a given error code .