fn emit_certificate_tls13(
flight: &mut HandshakeFlight<'_, true>,
certkey: Option<&CertifiedKey>,
auth_context: Option<Vec<u8>>,
)
fn emit_certificate_tls13(
flight: &mut HandshakeFlight<'_, true>,
certkey: Option<&CertifiedKey>,
auth_context: Option<Vec<u8>>,
)