How do I deserialize the detail field in AxisFault to build MyException?

[Mariano Eloy Fern�ndez]

Hello,
I am working with Axis 1.1
I have a class MyException extends Exception thrown in the Web Service. 
Both De/Serializer are provided for MyException.
An AxisFault is received in the client with MyException as an XML in the 
detail field of AxisFault.
How do I build MyException from that XML? Do I have to do it manually? 
Then what's the MyExceptionDe/Serializer for?

Thanks,
Mariano Eloy Fern�ndez.