src/vs/workbench/contrib/notebook/browser/diff/diffElementViewModel.ts/SideBySideDiffElementViewModel/checkMetadataIfModified
class SideBySideDiffElementViewModel:	checkMetadataIfModified() {
		const modified = hash(getFormattedMetadataJSON(this.mainDocumentTextModel, this.original?.metadata || {}, this.original?.language)) !== hash(getFormattedMetadataJSON(this.mainDocumentTextModel, this.modified?.metadata ?? {}, this.modified?.language));
		if (modified) {
			return { reason: undefined };
		} else {
			return false;
		}
	}