anchor.diff:    @override
     String toString() => '($value1, $value2, $value3, $value4, $value5, $value6, $value7, $value8)';
   
  -  Tuple8 copyWith({
  +  Tuple8<T1, T2, T3, T4, T5, T6, T7, T8> copyWith({
       T1 value1,
       T2 value2,
       T3 value3,
  
positive.code:   @override
    String toString() => '($value1, $value2, $value3, $value4, $value5, $value6)';
  
    Tuple6 copyWith({
      T1 value1,
      T2 value2,
      T3 value3,
  
negative.code:   @override
    String toString() => '($value1, $value2, $value3, $value4, $value5, $value6, $value7, $value8, $value9, $value10, $value11, $value12, $value13, $value14, $value15)';
  
    Tuple15<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> copyWith({
      T1 value1,
      T2 value2,
      T3 value3,
  