Example using Auto-Boxing

CraftPlayer.java

package us.myles.trapexamples.api;

@TrapTag
public interface CraftPlayer {
	public EntityPlayer getHandle();
}

EntityPlayer.java

package us.myles.trapexamples.api;

import us.myles.classtrap.TrapTag;
import us.myles.classtrap.TrapTagType;

@TrapTag
public interface EntityPlayer {
	@TrapTag(type = TrapTagType.GETTER, value = "playerConnection")
	public PlayerConnection getPlayerConnection();
}

Example.java

package us.myles.trapexamples;

import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;
import us.myles.classtrap.MCUtils;
import us.myles.classtrap.Trap;
import us.myles.trapexamples.api.CraftPlayer;
import us.myles.trapexamples.api.EntityPlayer;
import us.myles.trapexamples.api.PlayerConnection;

public class Example extends JavaPlugin {
	public void onEnable() {

	}

	@Override
	public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
		if (sender instanceof Player) {
			CraftPlayer cp = Trap.create(CraftPlayer.class, sender);
			Object packet = MCUtils.makeNMS("PacketPlayOutUpdateHealth", 10f, 5, 1f);
			cp.getHandle().getPlayerConnection().sendPacket(packet);
		}
		return true;
	}
}

PlayerConnection.java

package us.myles.trapexamples.api;

import us.myles.classtrap.TrapTag;
import us.myles.classtrap.TrapTagType;

@TrapTag
public interface PlayerConnection {
	@TrapTag(type = TrapTagType.METHOD, value = "sendPacket")
	public void sendPacket(Object packet);
}