protected function addBladeDirectives()
    {
        $this->app->afterResolving('blade.compiler', function (BladeCompiler $bladeCompiler) {
            $bladeCompiler->directive('meta', function ($arguments) {
                return "<?php echo Meta::tag($arguments); ?>";
            });

            $bladeCompiler->directive('metas', function ($arguments) {
                return "<?php echo Meta::tags($arguments); ?>";
            });
        });
    }