public PrefetchSchedule withStreamId(String streamId) {
        setStreamId(streamId);
        return this;
    }
<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.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-mediatailor/src/main/java/com/amazonaws/services/mediatailor/model/PrefetchSchedule.java