client/util.go
func IsUserNotFound(err error) bool {
	if ae, ok := err.(authError); ok {
		return userNotFoundRegExp.MatchString(ae.Message)
	}
	return false
}
func IsUserNotFound(err error) bool {
	if ae, ok := err.(authError); ok {
		return userNotFoundRegExp.MatchString(ae.Message)
	}
	return false
}
func IsUserNotFound ( err error ) bool { if ae , ok := err . ( authError ) ; ok { return userNotFoundRegExp . MatchString ( ae . Message ) } return false }
// IsUserNotFound returns true if the error means user not found of v2 API.
IsUserNotFound returns true if the error means user not found of v2 API .