docs: def info(self, collector_id):
          """Return a dict of collector.
  
          Args:
              collector_id (int): id of collector (optional)
          """
          cid = self.collector_id
          if collector_id:
              cid = collector_id
  
          url = '{0}/{1}'.format(self.url, cid)
          request = requests.get(url, auth=self.auth)
          return request.json()