anchor.diff:    }
   }
   
  +@deprecated
   @immutable
   abstract class AdapterPart<T> extends _BasePart<T> {
     ListAdapter buildAdapter();
  
positive.code:   }
  }
  
  abstract class ComponentOOP<T> {}
  
  HigherEffect<T> higherEffect<T>(EffectPart<T> Function() builder) {
    return (Context<T> ctx) {
      final EffectPart<T> instance = builder();
  
negative.code:   }
  }
  
  @deprecated
  @immutable
  abstract class ViewPart<T> extends _BasePart<T> {
    Widget build();
  