** lists the options for retaining data from an audio stream.** ** `http://msdn.microsoft.com/en-us/library/ee125209%28v=vs.85%29.aspx`enum class SpeechRetainedAudioOptions {** Indicates that the audio should not be retained, but discarded after use.** ** Value is 0 (0x0) SRAONone,** Flag indicates that the audio stream should be retained (e.g., serialization of recognition ** object, playback of recognized audio, etc.).** ** Value is 1 (0x1) SRAORetainAudio;}