src/vs/workbench/contrib/notebook/browser/notebookDiffEditorInput.ts/NotebookDiffEditorInput/dispose
class NotebookDiffEditorInput:	override dispose() {
		this._modifiedTextModel?.dispose();
		this._modifiedTextModel = null;
		this._originalTextModel?.dispose();
		this._originalTextModel = null;
		super.dispose();
	}