vaadin 8 FilesystemContainer alternative

Hello, I used FilesystemContainer in a Vaadin 7 application to populate the contents of a com.vaadin.ui.Tree for viewing and selecting files on the server.

tree.setContainerDataSource (new FilesystemContainer (new File ("o: \\")));

However, when migrating this application to vaidim 8 I did not find an alternative to the FilesystemContainer. Could anyone tell me which way would be the best?

You can use the example at the bottom of https://vaadin.com/docs/v8/framework/datamodel/datamodel-hierarchical.html

Today this component was published in the Vaadin Directory:

https://vaadin.com/directory/component/filesystem-dataprovider-add-on