Microsoft.CodeAnalysis.Razor.Remote.IRemoteAddNestedFileService.GetNewNestedFileWorkspaceEditAsync(Microsoft.CodeAnalysis.ExternalAccess.Razor.JsonSerializableRazorPinnedSolutionInfoWrapper, Microsoft.CodeAnalysis.ExternalAccess.Razor.JsonSerializableDocumentId, Microsoft.CodeAnalysis.Razor.NestedFiles.NestedFileKind, System.Threading.CancellationToken)