src/vs/workbench/api/browser/mainThreadNotebookDto.ts/fromCellEditOperationDto
	export function fromCellEditOperationDto(edit: extHostProtocol.ICellEditOperationDto): notebookCommon.ICellEditOperation {
		if (edit.editType === notebookCommon.CellEditType.Replace) {
			return {
				editType: edit.editType,
				index: edit.index,
				count: edit.count,
				cells: edit.cells.map(fromNotebookCellDataDto)
			};
		} else {
			return edit;
		}
	}