Hi,
I don't know if it can be obtained from the kbase. I have made it from bpmn file, but parsing it and obtaining userTask nodes. You can check it here:
https://github.com/Salaboy/smart-tasks/blob/master/smart-tasks-utils/src/main/java/com/wordpress/salaboy/smarttasks/taskform/HumanTaskSemanticModule.java
Regards,
Demian