dbus codegen IdleMonitor and SafeHandle parameterless constructor

[altenstedt]

Commit 1f82e0b from PR #289 (release 0.19.0) breaks the code generated by:

dotnet dbus codegen --protocol-api --service org.gnome.Mutter.IdleMonitor

Error CS0310 : 'SafeHandle' must be a non-abstract type with a public parameterless constructor in order to use it as parameter 'T' in the generic type or method 'Reader.ReadHandle()'

protected static SafeHandle? ReadMessage_h(Message message, IdleMonitorObject _)
{
    var reader = message.GetBodyReader();
    return reader.ReadHandle<System.Runtime.InteropServices.SafeHandle>();
}

https://github.com/altenstedt/flextime-net/blob/main/Flextime.Monitor/IdleMonitor.DBus.cs

How can I use dbus codegen for IdleMonitor using 0.19.0 or later?

[tmds]

How can I use dbus codegen for IdleMonitor using 0.19.0 or later?

You need to update the tool to a 0.19.0+ version.

It will use SafeFileHandle as the generic parameter. That change is included for the codegen command in the referenced PR.

This breaking change was made to match with the pattern .NET uses to create a SafeHandle in NativeAOT compatible code.