src/vs/workbench/services/themes/browser/fileIconThemeData.ts/FileIconThemeData/toStorage
class FileIconThemeData:	toStorage(storageService: IStorageService) {
		const data = JSON.stringify({
			id: this.id,
			label: this.label,
			description: this.description,
			settingsId: this.settingsId,
			styleSheetContent: this.styleSheetContent,
			hasFileIcons: this.hasFileIcons,
			hasFolderIcons: this.hasFolderIcons,
			hidesExplorerArrows: this.hidesExplorerArrows,
			extensionData: ExtensionData.toJSONObject(this.extensionData),
			watch: this.watch
		});
		storageService.store(FileIconThemeData.STORAGE_KEY, data, StorageScope.GLOBAL, StorageTarget.MACHINE);
	}