src/vs/workbench/contrib/notebook/common/model/cellEdit.ts/SpliceCellsEdit/constructor
class SpliceCellsEdit:	constructor(
		public resource: URI,
		private diffs: [number, NotebookCellTextModel[], NotebookCellTextModel[]][],
		private editingDelegate: ITextCellEditingDelegate,
		private beforeHandles: ISelectionState | undefined,
		private endHandles: ISelectionState | undefined
	) {
	}