src/vs/workbench/contrib/notebook/common/notebookEditorModel.ts/ComplexNotebookEditorModel/revert
class ComplexNotebookEditorModel:	async revert(options?: IRevertOptions | undefined): Promise<void> {
		if (options?.soft) {
			this.setDirty(false);
			return;
		}

		await this.load({ forceReadFromFile: true });
		const newStats = await this._resolveStats(this.resource);
		this._lastResolvedFileStat = newStats;

		this.setDirty(false);
		this._onDidChangeDirty.fire();
	}