copyWith property Null safety
@JsonKey(ignore: true)
Implementation
@JsonKey(ignore: true)
_$$FractionColumnWidthCopyWith<_$FractionColumnWidth> get copyWith =>
throw _privateConstructorUsedError;
@JsonKey(ignore: true)
_$$FractionColumnWidthCopyWith<_$FractionColumnWidth> get copyWith =>
throw _privateConstructorUsedError;