anchor.diff:   * are canceled, 1 ≤ j ≤ m, innermost first, so that aj is canceled before
    * aj+1.
    *
  - * @description Check various mixes of synchronous and asynchronous loops
  + * @description Check various mixes of synchronous and asynchronous for loops
    * with single break statement.
    *
    * @author a.semenov@unipro.ru
  
positive.code:           }
          }
        }
        if (s=='b'){
          streamController.close();
        }
      }
    }
    Expect.listEquals([1, 2, 0], log);
  }
  
  Future test8() async {
  
negative.code:         }
        }
      }
      if (s.startsWith('b')){
        streamController.close();
      }
    }
  