Some Go code with new error handling

softlayer_snippet_with_new_error_handling.go

virtualGuestService := softlayerClient.GetSoftLayer_Virtual_Guest_Service() or_on_error e {
    fail_with cli.NewExitError(e.Error(), 1)
}

server := cliContext.GlobalString("server")
port := cliContext.GlobalInt("port")

if server == "" {
    fail_with cli.NewExitError("server not provided as input flag", 1)
}