public void setStreamId(String streamId) {
        this.streamId = streamId;
    }
<p>
An optional stream identifier that you can specify in order to prefetch for multiple streams that use the same
playback configuration.
</p>

@param streamId
       An optional stream identifier that you can specify in order to prefetch for multiple streams that use the
       same playback configuration.
aws-java-sdk-mediatailor/src/main/java/com/amazonaws/services/mediatailor/model/PrefetchSchedule.java