pub fn fn_decrypt_application(
application_data: &Message,
server_hello_transcript: &HandshakeHash,
server_finished_transcript: &HandshakeHash,
server_key_share: &Option<Vec<u8>>,
psk: &Option<Vec<u8>>,
group: &NamedGroup,
client: &bool,
sequence: &u64,
) -> Result<Message, FnError>