The Hands-on Lab for building an HTML plugin that was introduced at VMworld 2017 is available at VMware Learning Platform, search for lab 1811-07 in the Software Defined Datacenter category. This lab is based on plugin-seed so you will also learn how to get started with that tool (available on our Fling site)
We are interested in your feedback for future improvements of the lab, thanks!
(please note that the latest version of this lab includes a text file containing all the code and commands to copy, so that you no longer have to use the awkward drag & drop from the manual)