func (se SystemError) Error() string {
	return fmt.Sprintf("tchannel error %v: %s", se.Code(), se.msg)
}
func (se SystemError) Error() string {
	return fmt.Sprintf("tchannel error %v: %s", se.Code(), se.msg)
}
func ( se SystemError ) Error ( ) string { return fmt . Sprintf ( " " , se . Code ( ) , se . msg ) }
// Error returns the code and message, conforming to the error interface
Error returns the code and message conforming to the error interface