onDidChangeNotebookDocument property
      
      Event<NotebookDocumentChangeEvent> 
      get
      onDidChangeNotebookDocument
      
    
    
An event that is emitted when a {@link NotebookDocumentnotebook} has changed.
Implementation
_i3.Event<_i3.NotebookDocumentChangeEvent> get onDidChangeNotebookDocument =>
    _i4.getProperty(
      this,
      'onDidChangeNotebookDocument',
    );