Handle API errors

package main

import (
	"fmt"
	"log"

	"github.com/softlayer/softlayer-go/services"
	"github.com/softlayer/softlayer-go/session"
	"github.com/softlayer/softlayer-go/sl"
)

var invalidId = 0

func main() {
	// Create a session
	sess := session.New()

	// Call DeleteObject on an invalid virtual guest
	_, err := services.GetVirtualGuestService(sess).
		Id(invalidId).
		DeleteObject()

	// Check the error.  In this instance, a 404 is handled by the application.  
	// Anything else is a no-go.
	if err != nil {
		// Try to type assert the error and look for http status code 404
		if apiErr, ok := err.(sl.Error); ok && apiErr.StatusCode == 404 {
			fmt.Println("Virtual Guest not found (already deleted?)")
		} else {
			log.Fatal("Unhandled error:", err)
		}
	}
}