RetainingObject constructor Null safety

RetainingObject(
  1. {required ObjRef? value,
  2. int? parentListIndex,
  3. ObjRef? parentMapKey,
  4. String? parentField}
)

Implementation

RetainingObject({
  required this.value,
  this.parentListIndex,
  this.parentMapKey,
  this.parentField,
});