docs: function getSourceStreamName(record, context) {
    if (isDynamoDBStreamType(context)) {
      const [tableName, streamTimestamp] = streamEvents.getDynamoDBEventSourceTableNameAndStreamTimestamp(record);
      return tableName && streamTimestamp ? `${tableName}/${streamTimestamp}` : '';
    } else {
      return streamEvents.getKinesisEventSourceStreamName(record);
    }
  }