code: def action(self, item, action_type, body={}):
          
          uri = "/%s/%s/action" % (self.uri_base, utils.get_id(item))
          action_body = {action_type: body}
          return self.api.method_post(uri, body=action_body)
docs: Several API calls are lumped under the 'action' API. This
          is the generic handler for such calls.