toJSON method

Implementation

Map<String, dynamic> toJSON()=>{
  //'postId': postId, //generated by firebase
  'ownerId': ownerId,
  'type': type.name,
  'referenceId': referenceId,
  'referenceType': referenceType.name,
  'createdTime': createdTime,
  'modifiedTime': modifiedTime,
  'message': message,
  'processed': processed,
};