public function renderJsContainerMarkerShapes(Map $map)
    {
        $output = array();

        foreach ($this->computeMarkerShapes($map) as $markerShape) {
            $output[] = sprintf(
                '%s.marker_shapes.%s = %s',
                $this->getJsContainerName($map),
                $markerShape->getJavascriptVariable(),
                $this->markerShapeHelper->render($markerShape)
            );
        }

        return implode('', $output);
    }