DynamoDB BatchWriteItem API that can be used to put multiple items to and/or
delete multiple items from multiple tables in a single request-response
Used to perform a batch write operation to DynamoDB.
the tables and the respective keys to delete from and/or the
respective items to be put.
Used to perform a batch write operation to DynamoDB with full parameter
Used to perform a batch write operation for the unprocessed items
returned from a previous batch write operation.