anchor.diff:      })()) : $lhs$)(_$index >= _$size ? $package$finished : null);
       $dart$core.String toString() => $outer$ceylon$language$List.toString() + ".iterator()";
   }
  -class List$collect$list_ implements List {
  +class List$collect$list_ implements dart$$Object, List {
       List $outer$ceylon$language$List;
       Callable $capture$List$collect$collecting;
       List$collect$list_([List $outer$ceylon$language$List, Callable $capture$List$collect$collecting]) {
  
positive.code: 
  Callable loop([$dart$core.Object first]) => $package$loop(first);
  
  class Map$keys$$anonymous$0_ implements Collection {
      Map $outer$ceylon$language$Map;
      Map$keys$$anonymous$0_([Map $outer$ceylon$language$Map]) {
          this.$outer$ceylon$language$Map = $outer$ceylon$language$Map;
  
negative.code: 
  AuthorsAnnotation by([Sequential authors]) => $package$by(authors);
  
  class ThrownExceptionAnnotation implements dart$$Basic, SequencedAnnotation {
      ThrownExceptionAnnotation([meta$declaration$Declaration type, $dart$core.String when]) {
          this.type = type;
          this.when = when;
  