human
Complete this python program:
def GroupVCard(parent):
assistant
#Here is the Python code you requested.

    """A factory for generating group commands
    """
    class GroupVCardCommand(parent, ):
        SYNOPSIS = tuple([((t and t.replace('vcard', 'group')) or t) for t in parent.SYNOPSIS])
        KIND = 'group'
        ORDER = ('Tagging', 4)
        def _valid_vcard_handle(self, vc_handle):
            return (vc_handle and ('-' != vc_handle[0]) and ('@' not in vc_handle) and (not self.session.config.get_tag_id(vc_handle)))
        def _prepare_new_vcard(self, vcard):
            (session, handle) = (self.session, vcard.nickname)
            return (AddTag(session, arg=[handle]).run() and Filter(session, arg=['add', ('group:%s' % handle), ('+%s' % handle), vcard.fn]).run())
        def _add_from_messages(self):
            raise ValueError(('Invalid    group    ids:    %s' % self.args))
        def _pre_delete_vcard(self, vcard):
            (session, handle) = (self.session, vcard.nickname)
            return (Filter(session, arg=['delete', ('group:%s' % handle)]).run() and DeleteTag(session, arg=[handle]).run())
    return GroupVCardCommand