anchor.diff:      if (parameterNode is DefaultFormalParameter &&
           parameterNode.defaultValue != null) {
         defaultValueCode = _extractConstantCode(
  -          parameterNode.defaultValue, element.library, importCollector, logger);
  +          parameterNode.defaultValue,
  +          element.library,
  +          importCollector,
  +          logger,
  +          _generatedLibraryId,
  +          _resolver);
       }
       return 'new r.ParameterMirrorImpl(r"${element.name}", $descriptor, '
           '$ownerIndex, ${_constConstructionCode(importCollector)}, '
  
positive.code:     void addLibrary(LibraryElement library, ClassElement reflector) {
        _ReflectorDomain domain = getReflectorDomain(reflector);
        if (domain._capabilities.supportsLibraries) {
          importCollector._addLibrary(library);
          domain._libraries.add(library);
        }
  
negative.code:         defaultValueCode = " = ${_extractConstantCode(
              parameterNode.defaultValue,
              parameterElement.library,
              importCollector, logger, _generatedLibraryId, _resolver)}";
        }
        return "${parameterNames[requiredPositionalCount + i]}"
            "$defaultValueCode";
  