anchor.diff:  }
   
   /// Combines the hash code of multiple objects.
  -int hash(Iterable<Object?> objects) =>
  +int hash(Iterable<dynamic> objects) =>
       _finish(objects.fold(0, (a, b) => _combine(a, b.hashCode)));
   
   /// Combines the hash code of one object [a].
  -int hash1(Object? a) => _finish(_combine(0, a.hashCode));
  +int hash1(dynamic a) => _finish(_combine(0, a.hashCode));
   
   /// Combines the hash code of two objects [a] and [b].
  -int hash2(Object? a, Object? b) =>
  +int hash2(dynamic a, dynamic b) =>
       _finish(_combine(_combine(0, a.hashCode), b.hashCode));
   
   /// Combines the hash code of three objects [a], [b] and [c].
  -int hash3(Object? a, Object? b, Object? c) => _finish(
  +int hash3(dynamic a, dynamic b, dynamic c) => _finish(
       _combine(_combine(_combine(0, a.hashCode), b.hashCode), c.hashCode));
   
   /// Combines the hash code of four objects [a], [b], [c] and [d].
  -int hash4(Object? a, Object? b, Object? c, Object? d) => _finish(_combine(
  +int hash4(dynamic a, dynamic b, dynamic c, dynamic d) => _finish(_combine(
       _combine(_combine(_combine(0, a.hashCode), b.hashCode), c.hashCode),
       d.hashCode));
   
   /// Combines the hash code of four objects [a], [b], [c], [d], and [e].
  -int hash5(Object? a, Object? b, Object? c, Object? d, Object? e) =>
  +int hash5(dynamic a, dynamic b, dynamic c, dynamic d, dynamic e) =>
       _finish(_combine(
           _combine(
               _combine(_combine(_combine(0, a.hashCode), b.hashCode), c.hashCode),
  
positive.code: 
  /// Combines the hash code of four objects [a], [b], [c], [d], [e], [f], [g],
  /// [h], and [i].
  int hash9(Object? a, Object? b, Object? c, Object? d, Object? e, Object? f,
          Object? g, Object? h, Object? i) =>
      _finish(_combine(
          _combine(
              _combine(
  
negative.code:         e.hashCode));
  
  /// Combines the hash code of four objects [a], [b], [c], [d], [e], and [f].
  int hash6(dynamic a, dynamic b, dynamic c, dynamic d, dynamic e, dynamic f) =>
      _finish(_combine(
          _combine(
              _combine(
  