Add the bridge_user given
    Return a list of BridgeUser objects with custom fields

def add_user(bridge_user):
    """
    Add the bridge_user given
    Return a list of BridgeUser objects with custom fields
    """
    resp = post_resource(admin_uid_url(None) +
                         ("?%s" % CUSTOM_FIELD),
                         json.dumps(bridge_user.to_json_post(),
                                    separators=(',', ':')))
    return _process_json_resp_data(resp, no_custom_fields=True)