anchor.diff:  type DepthTaggerHelper() =
       inherit VsTestBase()
   
  -    let taggerProvider = DepthColorizerTaggerProvider(base.ServiceProvider,base.DocumentFactoryService,base.ProjectFactory ,base.VsLanguageService  )
  +    let taggerProvider = DepthColorizerTaggerProvider(base.ServiceProvider, base.DocumentFactoryService, base.ProjectFactory, base.VsLanguageService)
   
       member __.GetTagger(buffer) = 
           taggerProvider.CreateTagger<_>(buffer)
  
positive.code:     member x.M = ()
  """
          let buffer = createMockTextBuffer content fileName
          let tagger = helper.GetTagger(buffer)
          testEvent tagger.TagsChanged "Timed out before tags changed" timeout
              (fun () -> 
  
negative.code: type Hoge () =
  """
          let buffer = createMockTextBuffer content fileName
          helper.SetUpProjectAndCurrentDocument(createVirtualProject(buffer, fileName), fileName)
          let tagger = helper.GetTagger(buffer)
          testEvent tagger.TagsChanged "Timed out before tags changed" timeout
              (fun () -> 
  