src/vs/workbench/contrib/notebook/browser/diff/notebookTextDiffEditor.ts/NotebookDiffEditorSelection/compare
class NotebookDiffEditorSelection:	compare(other: IEditorPaneSelection): EditorPaneSelectionCompareResult {
		if (!(other instanceof NotebookDiffEditorSelection)) {
			return EditorPaneSelectionCompareResult.DIFFERENT;
		}

		if (this.selections.length !== other.selections.length) {
			return EditorPaneSelectionCompareResult.DIFFERENT;
		}

		for (let i = 0; i < this.selections.length; i++) {
			if (this.selections[i] !== other.selections[i]) {
				return EditorPaneSelectionCompareResult.DIFFERENT;
			}
		}

		return EditorPaneSelectionCompareResult.IDENTICAL;
	}