toJson method
Implementation
@override
Object toJson() => {
if (name.isNotDefault) 'name': name,
if (type.isNotDefault) 'type': type.toJson(),
if (metadata.isNotDefault) 'metadata': metadata,
if (mentions.isNotDefault)
'mentions': [for (final i in mentions) i.toJson()],
'sentiment': ?sentiment?.toJson(),
};