Hi Dan Anselm,
Thanks for contacting Syncfusion support.
Currently, we are working to provide the Sample Create utility for Essential JS2. We will integrate with our upcoming volume release (2018 Volume 3).
Also, we don’t have the separate add-on build for Extension in the latest release. The Sample Creator utility available in corresponding platform build.
Please find the Essential JS1 ASP.NET Core sample creator in below help documentation.
Regards,
Kannan