private void configureFeatures(Jackson2ObjectMapperBuilder builder, Map<?, Boolean> features) {
   for (Entry<?, Boolean> entry : features.entrySet()) {
     if (entry.getValue() != null && entry.getValue()) {
       builder.featuresToEnable(entry.getKey());
     } else {
       builder.featuresToDisable(entry.getKey());
     }
   }
 }