this.streamForParentIndex = streamForParentIndex;
	public StreamWrapper( OutputStream streamForResultClass,			OutputStream streamForDataSet, OutputStream streamForGroupInfo,			OutputStream streamForRowIndexInfo )	{		this.streamForResultClass = streamForResultClass;		this.streamForDataSet = streamForDataSet;		this.streamForGroupInfo = streamForGroupInfo;		this.streamForRowIndexInfo = streamForRowIndexInfo;	}