o do nothing except bubble the event
    // on a potential Paste command:
    myDiagram.commandHandler.doKeyDown = function () {
      // method override must be function, not =>
      const diagram = this.diagram;
      const e = diagram.lastInput;
      // The meta (Command) key substitutes for "control" for Mac commands
      const control = e.meta || e.control;
      const shift = e.shift;
      const k = e.commandKey;
      if (
        ((control && k === 'v') || (shift && k === 'Insert')) &&
        (