def METHOD_NAME(user, parsed_addon_data):
    """Add-ons with a guid ending with reserved suffixes can only be submitted
    by people with the right permission.
    """
    guid = parsed_addon_data.get('guid') or ''
    return not guid.lower().endswith(amo.RESERVED_ADDON_GUIDS) or action_allowed_for(
        user, amo.permissions.SYSTEM_ADDON_SUBMIT
    )