:param nested: True if help is requested directly for this command
                    and False when help is requested for a list of possible
                    completions.

def _quick_help(self, nested=False):
        """:param nested: True if help is requested directly for this command
                    and False when help is requested for a list of possible
                    completions.
        """
        if nested:
            return self.command_path(), None, self.help_msg
        else:
            return self.command_path(), self.param_help_msg, self.help_msg