You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: qemu_protocol.gen.go
    path of file: ./repos/podman/vendor/github.com/digitalocean/go-libvirt
    
    the code of the file until where you have to start completion: // Copyright 2018 The go-libvirt Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy 
    
func (l *Libvirt) QEMUConnectDomainMonitorEventRegister(Dom OptDomain, Event OptString, Flags uint32) (rCallbackID int32, err error) {
	var buf []byte

	args := QEMUConnectDomainMonitorEventRegisterArgs {
		Dom: Dom,
		Event: Event,
		Flags: Flags,
	}

	buf, err = encode(&args)
	if err != nil {
		return
	}

	var r response
	r, err = l.requestStream(4, constants.QEMUProgram, buf, nil, nil)
	if err != nil {
		return
	}

	// Return value unmarshaling
	tpd := typedParamDecoder{}
	ct := map[string]xdr.TypeDecoder{"libvirt.TypedParam": tpd}
	rdr := bytes.NewReader(r.Payload)
	dec := xdr.NewDecoderCustomTypes(rdr, 0, ct)
	// CallbackID: int32
	_, err = dec.Decode(&rCallbackID)
	if err != nil {
		return
	}

	return
}