## PopupMenu `PopupMenu` displays a button that when pressed will toggle open a menu that is yielded in the content block. | Param | Type | Default | Description | | --- | --- | --- | --- | | contentClass | String | '' | A class that will be applied to the yielded content of the popup. | **Example** ```js ``` **See** - [Uses of PopupMenu](https://github.com/hashicorp/vault/search?l=Handlebars&q=PopupMenu) - [PopupMenu Source Code](https://github.com/hashicorp/vault/blob/master/ui/app/components/popup-menu.js) ---