src/vs/workbench/contrib/notebook/browser/view/notebookCellList.ts/NotebookCellList/dispose
class NotebookCellList:	override dispose() {
		this._isDisposed = true;
		this._viewModelStore.dispose();
		this._localDisposableStore.dispose();
		super.dispose();

		// un-ref
		this._previousFocusedElements = [];
		this._viewModel = null;
		this._hiddenRangeIds = [];
		this.hiddenRangesPrefixSum = null;
		this._visibleRanges = [];
	}