src/vs/workbench/contrib/notebook/common/model/notebookCellTextModel.ts/NotebookCellTextModel/dispose
class NotebookCellTextModel:	override dispose() {
		dispose(this._outputs);
		// Manually release reference to previous text buffer to avoid large leaks
		// in case someone leaks a CellTextModel reference
		const emptyDisposedTextBuffer = new PieceTreeTextBuffer([], '', '\n', false, false, true, true);
		emptyDisposedTextBuffer.dispose();
		this._textBuffer = emptyDisposedTextBuffer;
		super.dispose();
	}