Not showing text in designer when use converter

[Genusatplay]

When use binding <TextBlock Text="{Binding Source={l:Static p:Resources.UserFiles}, Path=Translated, Converter={x:Static converters2:StringTestConvUp.Default}}" /> textblock in xaml designer collapsed In runtime works fine. VS2019 with resharper show warn vs think source is string how i can setup right context for it?