Hello,
You just need to set the list style to the list you want to add (using embedHTML or addList methods). The parseStyle method generates a DOCX to open it with MS Word or LibreOffice and find out the ID of each style from a DOCX (you can consider this method as a help to read with a program the existing IDs).
We recommend you to run the included sample of the parseStyle method to understand the information it returns and the sample available for the importListStyle method:
Regards.