public void setPrefix(String prefix) {
        this.prefix = prefix;
    }
<p>
(Optional) Enter an S3 bucket prefix. The prefix is the string of characters after the bucket name and before the
object name. You can use the prefix to organize data stored in Amazon S3 buckets. For more information, see <a
href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-prefixes.html">Organizing objects using
prefixes</a> in the <i>Amazon Simple Storage Service User Guide</i>.
</p>
<p>
By default, Amazon Web Services IoT FleetWise sets the prefix
<code>processed-data/year=YY/month=MM/date=DD/hour=HH/</code> (in UTC) to data it delivers to Amazon S3. You can
enter a prefix to append it to this default prefix. For example, if you enter the prefix <code>vehicles</code>,
the prefix will be <code>vehicles/processed-data/year=YY/month=MM/date=DD/hour=HH/</code>.
</p>

@param prefix
       (Optional) Enter an S3 bucket prefix. The prefix is the string of characters after the bucket name and
       before the object name. You can use the prefix to organize data stored in Amazon S3 buckets. For more
       information, see <a
       href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-prefixes.html">Organizing objects using
       prefixes</a> in the <i>Amazon Simple Storage Service User Guide</i>.</p>
       <p>
       By default, Amazon Web Services IoT FleetWise sets the prefix
       <code>processed-data/year=YY/month=MM/date=DD/hour=HH/</code> (in UTC) to data it delivers to Amazon S3.
       You can enter a prefix to append it to this default prefix. For example, if you enter the prefix
       <code>vehicles</code>, the prefix will be
       <code>vehicles/processed-data/year=YY/month=MM/date=DD/hour=HH/</code>.
aws-java-sdk-iotfleetwise/src/main/java/com/amazonaws/services/iotfleetwise/model/S3Config.java