parseSessionIdFromMessage 
fun parseSessionIdFromMessage(message: String): String
Takes an encrypted message, and returns the session id.
Return 
The session id.
Parameters 
| message | The encrypted message. | 
Throws 
| SealdException | 
fun parseSessionIdFromMessage(message: String): String
Takes an encrypted message, and returns the session id.
The session id.
| message | The encrypted message. | 
| SealdException |