docs: protected void fixFields(Object instance) {
          for(AttributeEntry attr: atts.values()) {
              if(attr.getter == null)
                  attr.getter=findGetter(instance, attr.name);
              if(attr.setter == null)
                  attr.setter=findSetter(instance, attr.name);
              if(attr.setter == null)
                  attr.setter=new NoopAccessor();
          }
      }