public final class TestPlugin extends JavaPlugin {

    public static final String PLUGIN_ID = "channeltest";
    public static final Logger LOGGER = LogManager.getLogger(PLUGIN_ID);

    @Override
    public void onEnable() {
        Bukkit.getMessenger().registerIncomingPluginChannel(this, "voicechat:request_secret", (s, player, bytes) -> {
            LOGGER.info("RECEIVED PACKET");
        });
    }

    @Override
    public void onDisable() {

    }
}