stream-events.js
function getDynamoDBSequenceNumber(record) {
  return record && record.dynamodb && record.dynamodb.SequenceNumber ? record.dynamodb.SequenceNumber : '';
}
function getDynamoDBSequenceNumber(record) {
  return record && record.dynamodb && record.dynamodb.SequenceNumber ? record.dynamodb.SequenceNumber : '';
}
function getDynamoDBSequenceNumber ( record ) { return record && record . dynamodb && record . dynamodb . SequenceNumber ? record . dynamodb . SequenceNumber : '' ; }
Returns the sequence number from the given DynamoDB stream event record.
@param {DynamoDBEventRecord|*} record - a DynamoDB stream event record
@returns {string} the sequence number (if any) or an empty string
Returns the sequence number from the given DynamoDB stream event record .