src/vs/workbench/contrib/notebook/common/model/cellEdit.ts/CellMetadataEdit/constructor
class CellMetadataEdit:	constructor(
		public resource: URI,
		readonly index: number,
		readonly oldMetadata: NotebookCellMetadata,
		readonly newMetadata: NotebookCellMetadata,
		private editingDelegate: ITextCellEditingDelegate,
	) {

	}