src/vs/workbench/services/extensionManagement/browser/webExtensionsScannerService.ts/WebExtensionsScannerService/writeCustomBuiltinExtensionsCache
class WebExtensionsScannerService:	private writeCustomBuiltinExtensionsCache(updateFn: (extensions: IWebExtension[]) => IWebExtension[]): Promise<IWebExtension[]> {
		return this.withWebExtensions(this.customBuiltinExtensionsCacheResource, updateFn);
	}