public InteractiveIntelliSenseCommandHandler(
        CompletionCommandHandler completionCommandHandler,
        SignatureHelpCommandHandler signatureHelpCommandHandler,
        QuickInfoCommandHandlerAndSourceProvider quickInfoCommandHandler)
     : base(completionCommandHandler,
            signatureHelpCommandHandler,
            quickInfoCommandHandler)
 {
 }
 public QuickInfoSource(QuickInfoCommandHandlerAndSourceProvider commandHandler, ITextBuffer subjectBuffer)
 {
     _commandHandler = commandHandler;
     _subjectBuffer = subjectBuffer;
 }