Add new Menu to Bonita Studio

Dear All,

I have analysed the source code of Bonita Studio and I'm sure that the studio has created based on SWT(Standard Widget Toolkit). Unfortunately, I have no experience on using SWT. I want to Add a new menu or a Coolbar to Bonita Studio community version. My question is How can do it? if someone has experience with it, please guide me.

Thanks in Advance
REZA