src/vs/workbench/api/browser/mainThreadNotebookDto.ts/fromNotebookCellDataDto
	export function fromNotebookCellDataDto(cell: extHostProtocol.NotebookCellDataDto): notebookCommon.ICellDto2 {
		return {
			cellKind: cell.cellKind,
			language: cell.language,
			mime: cell.mime,
			source: cell.source,
			outputs: cell.outputs.map(fromNotebookOutputDto),
			metadata: cell.metadata,
			internalMetadata: cell.internalMetadata
		};
	}