##<prism-highlighter> Syntax highlighting via [Prism](http://prismjs.com/). Place a `` in your document, preferably as a direct child of ``. It will listen for `syntax-highlight` events on its parent element, and annotate the code being provided via that event. The `syntax-highlight` event's detail is expected to have a `code` property containing the source to highlight. The event detail can optionally contain a `lang` property, containing a string like `"html"`, `"js"`, etc. This flow is supported by [``](https://github.com/PolymerElements/marked-element).