Factory for arg parser.  Can be overridden as long as it returns
        an ArgParser compatible instance.

def create_argparser(self):
        """ Factory for arg parser.  Can be overridden as long as it returns
        an ArgParser compatible instance. """
        if self.desc:
            if self.title:
                fulldesc = '%s\n\n%s' % (self.title, self.desc)
            else:
                fulldesc = self.desc
        else:
            fulldesc = self.title
        return self.ArgumentParser(command=self, prog=self.name,
                                   description=fulldesc)