src/vs/workbench/services/themes/browser/fileIconThemeData.ts/FileIconThemeData/constructor
class FileIconThemeData:	private constructor(id: string, label: string, settingsId: string | null) {
		this.id = id;
		this.label = label;
		this.settingsId = settingsId;
		this.isLoaded = false;
		this.hasFileIcons = false;
		this.hasFolderIcons = false;
		this.hidesExplorerArrows = false;
	}