public static function activation_install()
 {
     FrmAppHelper::delete_cache_and_transient('frm_plugin_version');
     FrmFormActionsController::actions_init();
     self::install();
 }
 private function clear_cache()
 {
     $default_post_atts = array('post_type' => FrmStylesController::$post_type, 'post_status' => 'publish', 'numberposts' => 99, 'orderby' => 'title', 'order' => 'ASC');
     FrmAppHelper::delete_cache_and_transient(serialize($default_post_atts), 'frm_styles');
     FrmAppHelper::cache_delete_group('frm_styles');
     FrmAppHelper::delete_cache_and_transient('frmpro_css');
 }