def METHOD_NAME(pref_name, value):
    """Sets a value in /Library/Preferences/com.apple.SoftwareUpdate.
    Uses CoreFoundation.
    Args:
       pref_name: str preference name to set.
       valueL value to set it to.
    """
    CFPreferencesSetValue(
        pref_name, value,
        APPLE_SOFTWARE_UPDATE_PREFS_DOMAIN,
        kCFPreferencesAnyUser, kCFPreferencesCurrentHost)