package main

import (
	"fmt"
	"time"
)

type SMBError struct {
	What string
	When time.Time
}

// the receiver and that which is returned from generate_error must match 
// types. You may change this to an SMBError pointer recevier, or change the 
// return from generate_error to be an address.
func (e SMBError) Error() string {
	return fmt.Sprintf("%v at %v", e.What, e.When)
}

func generate_error() error {
	return SMBError{
		"Here is a silly error",
		time.Now(),
	}
}

func main() {
	if err := generate_error(); err != nil {
		fmt.Println(err)
	}
}