toJson method
Returns this as a serializable JSON value.
Implementation
@override
Map<String, Object?> toJson() => {
'runtimeType': 'StackItemSets',
'insertions': insertions
.map((e) => [e.$1.toString(), e.$2.map((e) => e.toJson()).toList()])
.toList(),
'deletions': deletions
.map((e) => [e.$1.toString(), e.$2.map((e) => e.toJson()).toList()])
.toList(),
};