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