public List<DynamoDBMapper.FailedBatch> batchDelete(Iterable<T> objectsToDelete) {
        return mapper.batchWrite((Iterable<T>)Collections.<T>emptyList(), objectsToDelete);
    }
Deletes the objects given using one or more calls to the batchWtiteItem API.
@param objectsToDelete The objects to delete.
@return The list of failed batches.
@see com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper#batchDelete
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/datamodeling/DynamoDBTableMapper.java