init(baseOptions: TTSBaseOptions, defaultVoiceId: String? = nil, defaultLocale: String? = nil, speakingRate: Float = 1.0, targetBucket: Int32 = 0, cacheDirectory: String? = nil)

var baseOptions: TTSBaseOptions

var cacheDirectory: String?

var defaultLocale: String?

var defaultVoiceId: String?

var speakingRate: Float

var targetBucket: Int32