toJson method

Map<String, Object?> toJson()

The declaration as DataEntityKind.fromJson reads it, leaving out what is empty.

Implementation

Map<String, Object?> toJson() => <String, Object?>{
  'type': type,
  if (requires.isNotEmpty) 'requires': requires,
  if (collider != null) 'collider': collider!.name,
};