anchor.diff:          this.$capture$interleave$iterables = $capture$interleave$iterables;
       }
       $dart$core.int get size => (() {
  -        Iterable arg$0$0 = functionIterable(new dart$Callable(() {
  +        Iterable arg$0$0 = dart$functionIterable(new dart$Callable(() {
               $dart$core.bool step$0$expired$1 = false;
               $dart$core.bool step$0$2() {
                   if (step$0$expired$1) {
  
positive.code:         }
      }
      Iterable map([Callable collecting]);
      static Iterable $map([final Iterable $this, Callable collecting]) => functionIterable(new dart$Callable(() {
          $dart$core.bool step$0$expired$17 = false;
          $dart$core.bool step$0$18() {
              if (step$0$expired$17) {
  
negative.code:     Iterable chain([Iterable other]);
      static Iterable $chain([final Iterable $this, Iterable other]) => new Iterable$chain$$anonymous$26_($this, other);
      Iterable product([Iterable other]);
      static Iterable $product([final Iterable $this, Iterable other]) => dart$functionIterable(new dart$Callable(() {
          $dart$core.bool step$0$expired$98 = false;
          $dart$core.bool step$0$99() {
              if (step$0$expired$98) {
  