AppFabricTracingWorkaround.cs

public static class PowershellExtensions
{
    public static Collection<PSObject> InvokeCommandAndRestoreDefaultTraceListener(this Pipeline pipeline)
    {
        bool hasDefaultTraceListener = PowershellExtensions.IsDefaultTraceListenerPresent();
        
        Collection<PSObject> results = pipeline.Invoke();
        
        if(hasDefaultTraceListener && !PowershellExtensions.IsDefaultTraceListenerPresent())
        {
            Trace.Listeners.Add(new DefaultTraceListener());
        }
        
        return results;
    }

    private static bool IsDefaultTraceListenerPresent()
    {
        foreach(TraceListener listener in Trace.Listeners)
        {
            if(listener is DefaultTraceListener)
            {
                return true;
            }
        }
        
        return false;
    }
}