This property holds process ID of the process that locks
file you want to replace using wodAppUpdate. It is same ID
as you would obtain using GetCurrentProcessId API,
if you own that process.
You can use this number to kill the process or access it
for some other reason. It is not safe to assume that
wodAppUpdate has enough privileges to access the process -
maybe your application (and wodAppUpdate with it) runs with
restricted user privileges.