<p>Note that sslDomain must implement {@link hunt.proton.engine.impl.ssl.ProtonSslEngineProvider}.
This is not possible enforce at the API level because {@link hunt.proton.engine.impl.ssl.ProtonSslEngineProvider} is not part of the
public Proton API.</p>
{@inheritDoc}
<p>Note that sslDomain must implement {@link hunt.proton.engine.impl.ssl.ProtonSslEngineProvider}. This is not possible enforce at the API level because {@link hunt.proton.engine.impl.ssl.ProtonSslEngineProvider} is not part of the public Proton API.</p>