message: Add write() TODO
diff: @@ -51,6 +51,7 @@ export class FileConfig<T> implements JsonConfig<T> {
  fs.writeFileSync(tempFilename, JSON.stringify(this.dataJson), {encoding: 'utf8'});
  fs.renameSync(tempFilename, this.filename);
  } catch (error) {
  + // TODO: Stop swalling the exception and handle it in the callers.
  logging.error(`Error writing config ${this.filename} ${error}`);
  }
  }
  