Values.VoiceMessageContentSourceAn object that contains a voice message and information about the recipient that you want to send it to.
type nonrec t = {callInstructionsMessage : CallInstructionsMessageType.t option;plainTextMessage : PlainTextMessageType.t option;sSMLMessage : SSMLMessageType.t option;}val to_value :
t ->
[> `Structure of
(string
* [> `Structure of (string * [> `String of NonEmptyString.t ]) list ])
list ]