toJson method

Implementation

@override
Object toJson() => {
  if (voiceConfig != null) 'voiceConfig': voiceConfig!.toJson(),
  if (multiSpeakerVoiceConfig != null)
    'multiSpeakerVoiceConfig': multiSpeakerVoiceConfig!.toJson(),
  if (languageCode.isNotDefault) 'languageCode': languageCode,
};