src/vs/workbench/api/browser/mainThreadNotebookDto.ts/fromNotebookOutputDto
	export function fromNotebookOutputDto(output: extHostProtocol.NotebookOutputDto): notebookCommon.IOutputDto {
		return {
			outputId: output.outputId,
			metadata: output.metadata,
			outputs: output.items.map(fromNotebookOutputItemDto)
		};
	}