fix 1.21.1 craftbukkit

src/main/java/org/alvindimas05/lagassist/packets/ServerPackage.java

@@ -16,16 +16,15 @@ public enum ServerPackage {
 	public static String getServerVersion() {
 		String name = Bukkit.getServer().getClass().getPackage().getName();
 
-		// Bukkit doesn't use server version on the package name after version 1.20.5
+		// CraftBukkit doesn't use server version on the package name after version 1.20.5
 		// So we need to add it manually instead
 		if(!name.contains("v1_")){
 			String version = Bukkit.getBukkitVersion().split("-")[0];
-			switch (version){
-				case "1.20.5":
-				case "1.20.6":
-					return "v1_20_R4";
-				case "1.21": return "v1_21_R1";
-			}
+            return switch (version) {
+                case "1.20.5", "1.20.6" -> "v1_20_R4";
+                // Set default to latest
+                default -> "v1_21_R1";
+            };
 		}
 
 		return name.substring(name.lastIndexOf('.') + 1);

src/main/java/org/alvindimas05/lagassist/utils/VersionMgr.java

@@ -32,35 +32,35 @@ public static ItemStack[] getStatics() {
 	public static boolean isV1_8() {
 		return Bukkit.getVersion().contains("1.8");
 	}
-	
+
 	public static boolean isV1_9() {
 		return Bukkit.getVersion().contains("1.9");
 	}
-	
+
 	public static boolean isV1_10() {
 		return Bukkit.getVersion().contains("1.10");
 	}
 
 	public static boolean isV1_11() {
 		return Bukkit.getVersion().contains("1.11");
 	}
-	
+
 	public static boolean isV1_12() {
 		return Bukkit.getVersion().contains("1.12");
 	}
-	
+
 	public static boolean isV1_13() {
 		return Bukkit.getVersion().contains("1.13");
 	}
 
 	public static boolean isV1_14() {
 		return Bukkit.getVersion().contains("1.14");
 	}
-	
+
 	public static boolean isV1_17() {
 		return Bukkit.getVersion().contains("1.17");
 	}
-	
+
 	public static boolean isV1_18() {
 		return Bukkit.getVersion().contains("1.18");
 	}
@@ -80,30 +80,30 @@ public static boolean isV1_21() {
 	public static boolean isV_17Plus() {
 		return isV1_17() || isV1_18() || isV1_19() || isV1_20() || isV1_21();
 	}
-	
+
 	public static boolean isNewMaterials() {
 		if (isV1_8()) {
 			return false;
 		}
-		
+
 		if (isV1_9()) {
 			return false;
 		}
-		
+
 		if (isV1_10()) {
 			return false;
 		}
-		
+
 		if (isV1_11()) {
 			return false;
 		}
-		
+
 		if (isV1_12()) {
 			return false;
 		}
-		
+
 		return true;
-		
+
 	}
 
 	public static boolean isPaper() {
@@ -138,31 +138,31 @@ public static void loadChunk(World world, int x, int z) {
 //			}
 //			e.remove();
 //		}
-//		
+//
 		chk.unload();
 	}
 
 	public static Object setUnbreakable(ItemMeta imeta, boolean unbreakable) {
 		return V1_13.setUnbreakable(imeta, unbreakable);
 	}
-	
+
 	public static boolean isUnbreakable(ItemMeta imeta) {
 		return V1_13.isUnbreakable(imeta);
 	}
-	
+
 	public static boolean isChunkGenerated(World world, Object provider, int x, int z) {
 		return isNewMaterials() ? V1_13.isChunkGenerated(world, x, z) : Reflection.isChunkExistent(provider, x, z);
 	}
-	
-	
+
+
 	public static boolean hasPassengers(Entity ent) {
 		if (isV1_8()) {
 			return ent.getPassenger() != null;
 		} else {
 			return !ent.getPassengers().isEmpty();
 		}
 	}
-	
+
 	public static double getMaxHealth(LivingEntity ent) {
 		if (isV1_8()) {
 			return ent.getMaxHealth();