added setSkin(Skin) method

src/main/java/dev/wolveringer/bungeeutil/player/Player.java

@@ -9,6 +9,7 @@
 import dev.wolveringer.bungeeutil.packets.types.PacketPlayOut;
 import dev.wolveringer.bungeeutil.player.connection.IInitialHandler;
 import dev.wolveringer.bungeeutil.position.Location;
+import dev.wolveringer.bungeeutil.profile.Skin;
 import dev.wolveringer.bungeeutil.scoreboard.Scoreboard;
 import dev.wolveringer.bungeeutil.sound.SoundCategory;
 import dev.wolveringer.bungeeutil.sound.SoundEffect;
@@ -105,6 +106,17 @@ public interface Player extends ProxiedPlayer {
 	 * SoundEffect.<Sound>.isAvariable(<player>.getVersion().getBigVersion())
 	 */
 	public void playSound(SoundEffect effect, SoundCategory soundcategory, Location location, float volume, float pitch);
+
+	/**
+	 * @param skin
+	 * 
+	 * Note: The player need to switch servers to make the skin visible.
+	 * Skin will reset when the player disconnect form bungee.
+	 * If you use this method on {@see PostLoginEvent} the player don't need to reconnect.
+	 * You can provide the original skin for the player to reset it.
+	 * If you provide null it will throw a NullPointerException
+	 */
+	public void setSkin(Skin skin);
 
 	public void sendPacket(PacketPlayOut packet);
 

src/main/java/dev/wolveringer/bungeeutil/player/ProxiedPlayerUserConnection.java

@@ -4,6 +4,8 @@
 import java.util.ArrayList;
 import java.util.logging.Level;
 
+import org.apache.commons.lang3.Validate;
+
 import com.google.common.base.Objects;
 import com.google.common.base.Preconditions;
 
@@ -31,6 +33,7 @@
 import dev.wolveringer.bungeeutil.packets.types.PacketPlayOut;
 import dev.wolveringer.bungeeutil.player.connection.IInitialHandler;
 import dev.wolveringer.bungeeutil.position.Location;
+import dev.wolveringer.bungeeutil.profile.Skin;
 import dev.wolveringer.bungeeutil.scoreboard.Scoreboard;
 import dev.wolveringer.bungeeutil.sound.SoundCategory;
 import dev.wolveringer.bungeeutil.sound.SoundEffect;
@@ -50,6 +53,7 @@
 import net.md_5.bungee.api.event.ServerConnectEvent;
 import net.md_5.bungee.chat.ComponentSerializer;
 import net.md_5.bungee.connection.InitialHandler;
+import net.md_5.bungee.connection.LoginResult;
 import net.md_5.bungee.netty.ChannelWrapper;
 import net.md_5.bungee.netty.PipelineUtils;
 import net.md_5.bungee.protocol.packet.Kick;
@@ -380,4 +384,10 @@ public void updateInventory() {
 		*/
 		this.sendPacket(new PacketPlayOutWindowItems(0, items));
 	}
+
+	@Override
+	public void setSkin(Skin skin) {
+		Validate.notNull(skin, "skin may not be null");
+		((InitialHandler)getPendingConnection()).getLoginProfile().setProperties(new LoginResult.Property[]{new LoginResult.Property("textures", skin.getRawData(), skin.getSignature())});
+	}
 }