[Zope] Zope Database Connection

Hi all, I am trying to figure out a way to use a Zope Database Connection object from within a Python class, which is then going to be subclassed by a ZClass. In my Python class, I want to have an instance of the parent class of all Zope Database Connections, so that I can work with all types of connections (be it Gadfly, Solid, or whatever). However, I am not sure which class this is. I think it is Shared.DC.ZRDB.Connection.Connection. Is that correct? Also, in the creation form of my ZClass, I'd like to have a connection selection dialog, similar to the one in the creation form of ZSQL Method. How do I get a list of connection instances in the current folder? Thanks, Ivan Raikov