GetSession should return null when the session does not exist

[GoogleCodeExporter]

If I call the GetSession method (in class TerminalServicesServer) with an 
invalid session as argument, the return value is a TerminalServicesSession. If 
I try to retrieve the value of a property, an exception is thrown.

Please change your code that this method returns null or throws an exception if 
the session does not exist.

Cassia Version: latest (2.0.0.60)

Original issue reported on code.google.com by [email protected] on 13 Sep 2012 at 2:12