| Name | Version | Filename | Relevant types |
|---|---|---|---|
| System.Activities.Presentation | 4.0.0.0 | System.Activities.Presentation.dll |
System.Activities.Presentation.Model.WeakKeyDictionary`2+WeakComparer |
| WindowsBase | 4.0.0.0 | WindowsBase.dll |
MS.Internal.ContentType+WeakComparer |