anchor.diff:                          Character next;
                           next = next$8 as Character;
                           doElse$7 = false;
  -                        _$peekedWasSeparator = Boolean.nativeValue($outer$ceylon$language$dartStringSplit$$anonymous$2_.$capture$dartStringSplit$splitting.f(next) as Boolean);
  +                        _$peekedWasSeparator = Boolean.nativeValue(($outer$ceylon$language$dartStringSplit$$anonymous$2_.$capture$dartStringSplit$splitting as Callable).f(next) as Boolean);
                       }
                   }
                   if (doElse$7) {
  
positive.code:     }
  }
  class impl$MemberImpl implements serialization$Member {
      impl$MemberImpl([meta$declaration$FunctionOrValueDeclaration attribute]) {
          meta$declaration$ValueDeclaration attribute$0;
          if (!(attribute is meta$declaration$ValueDeclaration)) {
              throw new AssertionError("Violated: is ValueDeclaration attribute");
          }
          attribute$0 = attribute as meta$declaration$ValueDeclaration;
          this.attribute = attribute$0;
      }
      meta$declaration$ValueDeclaration attribute;
      $dart$core.Object referred([$dart$core.Object instance]) {
  
negative.code:         }
          return result;
      }
      Contextual$Using $new$Contextual$Using([$dart$core.Object _$newValue]) => new Contextual$Using(this, _$newValue);
  }
  class Correspondence$keys$$anonymous$0_ implements Category {
      Correspondence $outer$ceylon$language$Correspondence;
  