src/vs/workbench/contrib/notebook/browser/view/output/outputRenderer.ts/OutputRenderer/constructor
class OutputRenderer:	constructor(
		notebookEditor: ICommonNotebookEditor,
		instantiationService: IInstantiationService
	) {
		for (const desc of OutputRendererRegistry.getOutputTransformContributions()) {
			try {
				const contribution = instantiationService.createInstance(desc.ctor, notebookEditor);
				contribution.getMimetypes().forEach(mimetype => { this._richMimeTypeRenderers.set(mimetype, contribution); });
			} catch (err) {
				onUnexpectedError(err);
			}
		}
	}