Fixup test code.

src/EditorFeatures/VisualBasicTest/Completion/CompletionProviders/CrefCompletionProviderTests.vb

@@ -820,6 +820,14 @@ End Class]]></a>.Value.NormalizeLineEndings()
             Public Function GetNameForArgument(argument As SyntaxNode) As String Implements ISyntaxFactsService.GetNameForArgument
                 Throw New NotImplementedException()
             End Function
+
+            Public Function IsLeftSideOfDot(node As SyntaxNode) As Boolean Implements ISyntaxFactsService.IsLeftSideOfDot
+                Throw New NotImplementedException()
+            End Function
+
+            Public Function GetRightSideOfDot(node As SyntaxNode) As SyntaxNode Implements ISyntaxFactsService.GetRightSideOfDot
+                Throw New NotImplementedException()
+            End Function
         End Class
     End Class
 End Namespace