src/vs/workbench/contrib/notebook/browser/contrib/find/findController.ts/NotebookFindWidget/replaceAll
class NotebookFindWidget:	protected replaceAll() {
		this._progressBar.infinite().show();

		this._notebookEditor.viewModel!.replaceAll(this._findModel.findMatches, this.replaceValue).then(() => {
			this._progressBar.stop();
		});
	}