*/
public String[] update(String sessionId, MessageUnit[] msgUnitArr)
{
String[] ret = new String[msgUnitArr.length];
for (int ii=0; ii<msgUnitArr.length; ii++) {
MessageUnit msgUnit = msgUnitArr[ii];
System.out.println("\n================== BlasterCallback update START =============");
System.out.println("Callback invoked for " + msgUnit.xmlKey + " content length = " + msgUnit.content.length);
System.out.println(new String(msgUnit.content));
System.out.println("================== BlasterCallback update END ===============\n");
ret[ii] = "<qos><state id='OK'/></qos>";