This is called to create a connection instance. Normally you'd
        pass a connection class to do_open, but it doesn't actually check for
        a class, and just expects a callable. As long as we behave just as a
        constructor would have, we should be OK. If it ever changes so that
        we *must* pass a class, we'll create an UnsafeHTTPSConnection class
        which just sets check_domain to False in the class definition, and
        choose which one to pass to do_open.

def _conn_maker(self, *args, **kwargs):
        """
        This is called to create a connection instance. Normally you'd
        pass a connection class to do_open, but it doesn't actually check for
        a class, and just expects a callable. As long as we behave just as a
        constructor would have, we should be OK. If it ever changes so that
        we *must* pass a class, we'll create an UnsafeHTTPSConnection class
        which just sets check_domain to False in the class definition, and
        choose which one to pass to do_open.
        """
        result = HTTPSConnection(*args, **kwargs)
        if self.ca_certs:
            result.ca_certs = self.ca_certs
            result.check_domain = self.check_domain
        return result