src/vs/workbench/contrib/extensions/browser/extensionsActions.ts/SetProductIconThemeAction/update
class SetProductIconThemeAction:	update(): void {
		this.workbenchThemeService.getProductIconThemes().then(productIconThemes => {
			this.enabled = this.computeEnablement(productIconThemes);
			this.class = this.enabled ? SetProductIconThemeAction.EnabledClass : SetProductIconThemeAction.DisabledClass;
		});
	}