/**
  * Renders a polyline.
  *
  * @param \Ivory\GoogleMap\Overlays\Polyline $polyline The polyline.
  * @param \Ivory\GoogleMap\Map               $map      The map.
  *
  * @return string The JS output.
  */
 public function render(Polyline $polyline, Map $map)
 {
     $this->jsonBuilder->reset()->setValue('[map]', $map->getJavascriptVariable(), false)->setValue('[path]', array());
     foreach ($polyline->getCoordinates() as $index => $coordinate) {
         $this->jsonBuilder->setValue(sprintf('[path][%d]', $index), $coordinate->getJavascriptVariable(), false);
     }
     $this->jsonBuilder->setValues($polyline->getOptions());
     return sprintf('%s = new google.maps.Polyline(%s);' . PHP_EOL, $polyline->getJavascriptVariable(), $this->jsonBuilder->build());
 }