def send(self, campaign_id):
self.campaign_id = campaign_id<EOL>return self._mc_client._post(url=self._build_path(campaign_id, '<STR_LIT>'))<EOL>
Send a MailChimp campaign. For RSS Campaigns, the campaign will send
according to its schedule. All other campaigns will send immediately.

:param campaign_id: The unique id for the campaign.
:type campaign_id: :py:class:`str`