def newgroups(self, timestamp):
return [x for x in self.newgroups_gen(timestamp)]<EOL>
NEWGROUPS command.

        Retreives a list of newsgroups created on the server since the specified
        timestamp. See newgroups_gen() for more details.

        See <http://tools.ietf.org/html/rfc3977#section-7.3>

        Args:
            timestamp: Datetime object giving 'created since' datetime.

        Returns:
            A list of tuples in the format given by newgroups_gen()