src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts/StackOperation/redo
class StackOperation:	async redo(): Promise<void> {
		this._pauseableEmitter.pause();
		for (let i = 0; i < this._operations.length; i++) {
			await this._operations[i].redo();
		}
		this._postUndoRedo(this._resultAlternativeVersionId);
		this._pauseableEmitter.fire({
			rawEvents: [],
			synchronous: undefined,
			versionId: this.textModel.versionId,
			endSelectionState: this._resultSelectionState
		});
		this._pauseableEmitter.resume();

	}