code: def list_logs(self, source, entry_id=None, start_time=None, end_time=None):
          
          route_values = {}
          if source is not None:
              route_values['source'] = self._serialize.url('source', source, 'str')
          if entry_id is not None:
              route_values['entryId'] = self._serialize.url('entry_id', entry_id, 'str')
          query_parameters = {}
          if start_time is not None:
              query_parameters['startTime'] = self._serialize.query('start_time', start_time, 'iso-8601')
          if end_time is not None:
              query_parameters['endTime'] = self._serialize.query('end_time', end_time, 'iso-8601')
          response = self._send(http_method='GET',
                                location_id='991842f3-eb16-4aea-ac81-81353ef2b75c',
                                version='5.0-preview.1',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('[INotificationDiagnosticLog]', self._unwrap_collection(response))
docs: ListLogs.
          [Preview API] List diagnostic logs this service.
          :param str source:
          :param str entry_id:
          :param datetime start_time:
          :param datetime end_time:
          :rtype: [INotificationDiagnosticLog]