SignatureAndHashAlgorithmsExtensionSerializer extends
        ExtensionSerializer<SignatureAndHashAlgorithmsExtensionMessage> { @Override public byte[] serializeExtensionContent() { LOGGER.debug("Serializing SigantureAndHashAlgorithmsExtensionMessage"); writeSignatureAndHashAlgorithmsLength(msg); writeSignatureAndHashAlgorithms(msg); return getAlreadySerialized(); } SignatureAndHashAlgorithmsExtensionSerializer(SignatureAndHashAlgorithmsExtensionMessage message); @Override byte[] serializeExtensionContent();  }
@Test public void testSerializeExtensionContent() { }