src/vs/workbench/contrib/notebook/browser/view/renderers/backLayerWebView.ts/BackLayerWebView/updateOutputRenderers
class BackLayerWebView:	updateOutputRenderers() {
		if (!this.webview) {
			return;
		}

		const renderersData = this.getRendererData();
		this.localResourceRootsCache = this._getResourceRootsCache();
		const mixedResourceRoots = [
			...(this.localResourceRootsCache || []),
			...(this._currentKernel ? [this._currentKernel.localResourceRoot] : []),
		];

		this.webview.localResourcesRoot = mixedResourceRoots;
		this._sendMessageToWebview({
			type: 'updateRenderers',
			rendererData: renderersData
		});
	}