public java.util.Date getLastModificationTime() {
        return this.lastModificationTime;
    }
<p>
When you create a dataset, <code>LastModificationTime</code> is the same as <code>CreationTime</code>. While data
is being imported to the dataset, <code>LastModificationTime</code> is the current time of the
<code>DescribeDataset</code> call. After a <a
href="https://docs.aws.amazon.com/forecast/latest/dg/API_CreateDatasetImportJob.html">CreateDatasetImportJob</a>
operation has finished, <code>LastModificationTime</code> is when the import job completed or failed.
</p>

@return When you create a dataset, <code>LastModificationTime</code> is the same as <code>CreationTime</code>.
        While data is being imported to the dataset, <code>LastModificationTime</code> is the current time of the
        <code>DescribeDataset</code> call. After a <a
        href="https://docs.aws.amazon.com/forecast/latest/dg/API_CreateDatasetImportJob.html"
        >CreateDatasetImportJob</a> operation has finished, <code>LastModificationTime</code> is when the import
        job completed or failed.
aws-java-sdk-forecast/src/main/java/com/amazonaws/services/forecast/model/DescribeDatasetResult.java