wich class replace QextSerial enumerator ?

Hi Hall, It seems that with QT51 and QserialPort the class QextSerialEnumerator is not available as it was in older version. (i have installed qserialPort, the examples works perfectly but i can’t find qextserialenumerator.h on my hard disk, so my project does not compile. What is now the mean to find the available COM ? Thanks Montin