docs: def build_statistics_item(self):
          """
          Statistics items are as following:
          * zabbix_sender result
              + processed, failed, total and more...
          """
          if self.result is not None:
              stats = dict()
              result = self.get_result()
              info = result['info']
              info = info.split(';')
              info = [entry.split(':') for entry in info]
  
              prefix = 'blackbird.zabbix_sender'
  
              for entry in info:
                  key = entry[0].strip()
                  value = None
  
                  if key == 'processed':
                      value = int(entry[1])
                  elif key == 'failed':
                      value = int(entry[1])
                  elif key == 'total':
                      value = int(entry[1])
                  elif key == 'seconds spent':
                      key = key.replace(' ', '_')
                      value = float(entry[1])
                      value *= 1000
                      value = str(round(value, 6))
                  else:
                      log_message = (
                          'Blackbird has never seen {key}. {key} is new key??'
                          ''.format(key=key)
                      )
                      self.logger.info(log_message)
  
                  if value is not None:
                      key = '.'.join([prefix, key])
                      stats[key] = value
  
              if 'response' in result:
                  key = '.'.join([prefix, 'response'])
                  stats[key] = result['response']
  
              for key, value in stats.iteritems():
                  stats_key_list = [
                      'blackbird.zabbix_sender.processed',
                      'blackbird.zabbix_sender.failed',
                      'blackbird.zabbix_sender.total',
                  ]
                  item = BlackbirdStatisticsItem(
                      key=key,
                      value=value,
                      host=self.options['hostname']
                  )
                  if key in stats_key_list:
                      if self.enqueue(item=item, queue=self.stats_queue):
                          self.logger.debug(
                              'Inserted {0} to the statistics queue'
                              ''.format(item.data)
                          )
                  else:
                      if self.enqueue(item=item, queue=self.queue):
                          self.logger.debug(
                              'Inserted {0} to the queue'.format(item.data)
                          )