src/vs/workbench/api/node/extHostLogService.ts/ExtHostLogService/constructor
class ExtHostLogService:	constructor(
		@IExtHostInitDataService initData: IExtHostInitDataService,
	) {
		if (initData.logFile.scheme !== Schemas.file) { throw new Error('Only file-logging supported'); }
		super(new SpdLogLogger(ExtensionHostLogFileName, initData.logFile.fsPath, true, initData.logLevel));
	}