We've already done a cast here.

grokys · grokys · commit 43209e0530d6 · 2017-03-28T12:37:29.000+02:00
diff --git a/src/GitHub.App/Services/DialogService.cs b/src/GitHub.App/Services/DialogService.cs
@@ -30,7 +30,7 @@ public Task<CloneDialogResult> ShowCloneDialog([AllowNull] IConnection connectio
             {
                 var vm = x.View.ViewModel as IBaseCloneViewModel;
 
-                ((IHasDone)x.View.ViewModel).Done.Subscribe(_ =>
+                vm.Done.Subscribe(_ =>
                 {
                     basePath = vm?.BaseRepositoryPath;
                     repository = vm?.SelectedRepository;
@@ -58,7 +58,7 @@ public Task<string> ShowReCloneDialog(IRepositoryModel repository)
                     vm.SelectedRepository = repository;
                 }
 
-                ((IHasDone)x.View.ViewModel).Done.Subscribe(_ =>
+                vm.Done.Subscribe(_ =>
                 {
                     basePath = vm?.BaseRepositoryPath;
                 });

Original file line number	Diff line number	Diff line change
`@@ -30,7 +30,7 @@ public Task<CloneDialogResult> ShowCloneDialog([AllowNull] IConnection connectio`
`30`	`30`	`{`
`31`	`31`	`var vm = x.View.ViewModel as IBaseCloneViewModel;`
`32`	`32`
`33`		`- ((IHasDone)x.View.ViewModel).Done.Subscribe(_ =>`
	`33`	`+ vm.Done.Subscribe(_ =>`
`34`	`34`	`{`
`35`	`35`	`basePath = vm?.BaseRepositoryPath;`
`36`	`36`	`repository = vm?.SelectedRepository;`
`@@ -58,7 +58,7 @@ public Task<string> ShowReCloneDialog(IRepositoryModel repository)`
`58`	`58`	`vm.SelectedRepository = repository;`
`59`	`59`	`}`
`60`	`60`
`61`		`- ((IHasDone)x.View.ViewModel).Done.Subscribe(_ =>`
	`61`	`+ vm.Done.Subscribe(_ =>`
`62`	`62`	`{`
`63`	`63`	`basePath = vm?.BaseRepositoryPath;`
`64`	`64`	`});`