This package includes the RA CDE custom plugin best practice guide, as well as a pre-built Eclipse EE project for the Slack messaging system. The guide provides you with the necessary information in how to build the custom RA CDE plugin, as well as the example project to get a better understanding this process.
I have incremented CDE-plugin-best-practice-guide-v2.0.zip to CDE-plugin-best-practice-guide-v2.1.zip after including plugins-dto-2.2-SNAPSHOT.jar that can be used in place of the Plug-ins-dto-1.11-SNAPSHOT.jar file referenced in the PDF.
Thanks for sharing guewa01!