What class methods are needed to create Knowledge Articles

Hi all,

I am creating a knowledge article at the back end. I have maintain the one order transaction in CRM_ORDER_MAINTAIN. I executed ST05 for a SQL trace and I found that class CL_CRM_KNOWLEDGE_ARTICLE_UTIL were called. Within that class, there were some methods like CREATE_NEW_KNOW_ARTICLE, GET_IBASE_KNOWLEDGE_ARTICLES. However, when I put break points in those methods and I created a new Knowledge Article on webui, the debugger didn't stop at those methods.

So my question is what methods should I look at in order to create knowledge articles?

Thanks in advance.

Hui Bin