src/vs/workbench/api/browser/mainThreadNotebookDto.ts/fromNotebookDataDto
	export function fromNotebookDataDto(data: extHostProtocol.NotebookDataDto): notebookCommon.NotebookData {
		return {
			metadata: data.metadata,
			cells: data.cells.map(fromNotebookCellDataDto)
		};
	}