src/vs/workbench/contrib/notebook/browser/view/cellParts/cellComments.ts/CellComments/initialize
class CellComments:	private async initialize(element: ICellViewModel) {
		if (this._initialized) {
			return;
		}

		this._initialized = true;
		const info = await this._getCommentThreadForCell(element);

		if (info) {
			this._createCommentTheadWidget(info.owner, info.thread);
		}
	}