decompiled sources doesn't work, and Reflector gets disturbed by R#

I wanted to see what System.Windows.Controls.BooleanToVisibilityConverter is doing.

So I selected "navigate to decompiled sources" and got "nothing" (see below).
The context menu for Reflectors "open in .NET Reflector" doesn't work either because R# first opens it's faulty decompilation and afterwards Reflector complains with:
-

.NET Reflector
-

The source code already exists for this item, so you do not need to use .NET Reflector
-

OK  
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"nothing" (see above):

// Type: System.Windows.Controls.BooleanToVisibilityConverter
// Assembly: PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
// Assembly location: C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\Profile\Client\PresentationFramework.dll

using System;
using System.Globalization;
using System.Runtime;
using System.Windows;
using System.Windows.Data;

namespace System.Windows.Controls
{
 
  public sealed class BooleanToVisibilityConverter : IValueConverter
  {
    [TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]
    public BooleanToVisibilityConverter();

    public object Convert(object value, Type targetType, object parameter, CultureInfo culture);

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture);
  }
}


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/\/\arkus.