Fix tests

src/VisualStudio/Core/Test/EditAndContinue/EditAndContinueTestHelper.vb

@@ -119,6 +119,10 @@ Namespace Microsoft.VisualStudio.LanguageServices.UnitTests.EditAndContinue
             Public Function IsCompilationEndAnalyzer(analyzer As DiagnosticAnalyzer, project As Project, compilation As Compilation) As Boolean Implements IDiagnosticAnalyzerService.IsCompilationEndAnalyzer
                 Throw New NotImplementedException()
             End Function
+
+            Public Function ForceAnalyzeAsync(solution As Solution, Optional projectId As ProjectId = Nothing, Optional cancellationToken As CancellationToken = Nothing) As Task Implements IDiagnosticAnalyzerService.ForceAnalyzeAsync
+                Throw New NotImplementedException()
+            End Function
         End Class
     End Class
 End Namespace