src/vs/workbench/contrib/notebook/browser/contrib/viewportCustomMarkdown/viewportCustomMarkdown.ts/NotebookViewportContribution/_warmupDocumentNow
class NotebookViewportContribution:	private _warmupDocumentNow() {
		if (this._notebookEditor.hasModel()) {
			for (let i = 0; i < this._notebookEditor.getLength(); i++) {
				const cell = this._notebookEditor.cellAt(i);

				if (cell?.cellKind === CellKind.Markup && cell?.getEditState() === CellEditState.Preview && !cell.isInputCollapsed) {
					// TODO@rebornix currently we disable markdown cell rendering in webview for accessibility
					// this._notebookEditor.createMarkupPreview(cell);
				} else if (cell?.cellKind === CellKind.Code) {
					this._renderCell((cell as CodeCellViewModel));
				}
			}
		}
	}