/**
* Get an instance of this class.
*
* @return GFActiveCampaign
*/
public static function get_instance()
{
if (self::$_instance == null) {
self::$_instance = new GFActiveCampaign();
}
return self::$_instance;
}
function gf_activecampaign()
{
return GFActiveCampaign::get_instance();
}
