src/vs/workbench/contrib/notebook/browser/notebookRendererMessagingServiceImpl.ts/NotebookRendererMessagingService/fireDidReceiveMessage
class NotebookRendererMessagingService:	public fireDidReceiveMessage(editorId: string, rendererId: string, message: unknown): void {
		this.receiveMessageEmitter.fire({ editorId, rendererId, message });
	}