docs: def add_indicators(self, indicators=list(), private=False, tags=list()):
          """Add indicators to the remote instance."""
          if len(indicators) == 0:
              raise Exception("No indicators were identified.")
          self.logger.debug("Checking {} indicators".format(len(indicators)))
          cleaned = clean_indicators(indicators)
          self.logger.debug("Cleaned {} indicators".format(len(cleaned)))
          whitelisted = check_whitelist(cleaned)
          self.logger.debug("Non-whitelisted {} indicators".format(len(whitelisted)))
          indicators = prune_cached(whitelisted)
          hashed = hash_values(indicators)
          self.logger.debug("Non-cached {} indicators".format(len(indicators)))
          self.logger.debug("Processing {} indicators".format(len(indicators)))
          request_count = int(math.ceil(len(indicators)/100.0))
          if request_count == 0:
              mesg = "[!] No indicators were left to process after "
              mesg += "cleaning, whitelisting and checking the cache."
              return {'message': mesg}
          stats = {'success': 0, 'failure': 0, 'requests': request_count,
                   'written': 0}
          mesg = "{} indicators found, making {} requests"
          self.logger.debug(mesg.format(len(indicators), request_count))
  
          if private:
              indicators = hashed
  
          if type(tags) == str:
              tags = [t.strip().lower() for t in tags.split(',')]
  
          start, end = (0, 100)
          for i, idx in enumerate(range(0, request_count)):
              if idx > 0:
                  time.sleep(3)  # Ensure we never trip the limit
                  self.logger.debug("Waiting 3 seconds before next request.")
              to_send = {'indicators': indicators[start:end], 'tags': tags}
              r = self._send_data('POST', 'admin', 'add-indicators', to_send)
              start, end = (end, end + 100)
              if not r['success']:
                  stats['failure'] += 1
                  continue
              stats['success'] += 1
              stats['written'] += r['writeCount']
              cache_items(to_send['indicators'])
          msg = ""
          msg += "{written} indicators written using {requests} requests: "
          msg += "{success} success, {failure} failure"
          stats['message'] = msg.format(**stats)
          return stats