@type t() :: %ExBifrost.Model.GeminiGenerationRequestGenerationConfigSpeechConfig{
  languageCode: String.t() | nil,
  multiSpeakerVoiceConfig:
    ExBifrost.Model.GeminiGenerationRequestGenerationConfigSpeechConfigMultiSpeakerVoiceConfig.t()
    | nil,
  voiceConfig:
    ExBifrost.Model.GeminiGenerationRequestGenerationConfigSpeechConfigVoiceConfig.t()
    | nil
}