def METHOD_NAME(name, reboot=False, upgrade_os=False):
    """
    Ensure that the VirtualBox Guest Additions are installed. Uses the CD,
    connected by VirtualBox.
    name
        The name has no functional value and is only used as a tracking
        reference.
    reboot : False
        Restart OS to complete installation.
    upgrade_os : False
        Upgrade OS (to ensure the latests version of kernel and developer tools
        installed).
    """
    ret = {"name": name, "changes": {}, "result": False, "comment": ""}
    current_state = __salt__["vbox_guest.additions_version"]()
    if current_state:
        ret["result"] = True
        ret["comment"] = "System already in the correct state"
        return ret
    if __opts__["test"]:
        ret["comment"] = "The state of VirtualBox Guest Additions will be changed."
        ret["changes"] = {
            "old": current_state,
            "new": True,
        }
        ret["result"] = None
        return ret
    new_state = __salt__["vbox_guest.additions_install"](
        reboot=reboot, upgrade_os=upgrade_os
    )
    ret["comment"] = "The state of VirtualBox Guest Additions was changed!"
    ret["changes"] = {
        "old": current_state,
        "new": new_state,
    }
    ret["result"] = bool(new_state)
    return ret