code: protected void addAttributes(Entity entity, Map<String, Object> attributes) {
          if (attributes != null) {
              for (Entry<String, Object> pairs : attributes.entrySet()) {
                  entity.set(pairs.getKey(), pairs.getValue());
              }
          }
      }
docs: Fill attributes for specified entity.
  
  @param entity     entity to fill.
  @param attributes Map of attributes on filling to entity.