* @param streamType
* @return
* @throws IOException
*/
private SeStreamOp createStream(Class<? extends SeStreamOp> streamType) throws IOException {
SeStreamOp streamOp;
if (SeInsert.class == streamType) {
streamOp = session.createSeInsert();
} else if (SeUpdate.class == streamType) {
streamOp = session.createSeUpdate();