Fix some related checkstyles

src/main/java/org/mvplugins/multiverse/core/api/BlockSafety.java

@@ -40,6 +40,7 @@ public interface BlockSafety {
 
     /**
      * Finds a portal-block next to the specified {@link Location}.
+     *
      * @param location  The {@link Location}
      * @return The next portal-block's {@link Location}.
      */

src/main/java/org/mvplugins/multiverse/core/api/Destination.java

@@ -44,6 +44,5 @@ public interface Destination<T extends DestinationInstance> {
      *
      * @return True if the SafeTeleporter will be used, false if not.
      */
-    // TODO: Check this in AsyncSafetyTeleporter
     boolean checkTeleportSafety();
 }

src/main/java/org/mvplugins/multiverse/core/commands/DeleteCommand.java

@@ -74,8 +74,8 @@ class DeleteCommand extends MultiverseCommand {
                 issuer.getIssuer(),
                 () -> {
                     runDeleteCommand(issuer, world, parsedFlags);
-                }, this.commandManager.formatMessage(
-                        issuer, MessageType.INFO, MVCorei18n.DELETE_PROMPT, "{world}", world.getName())));
+                }, this.commandManager.formatMessage(issuer, MessageType.INFO, MVCorei18n.DELETE_PROMPT,
+                "{world}", world.getName())));
     }
 
     private void runDeleteCommand(MVCommandIssuer issuer, LoadedMultiverseWorld world, ParsedCommandFlags parsedFlags) {

src/main/java/org/mvplugins/multiverse/core/permissions/CorePermissions.java

@@ -1,9 +1,32 @@
 package org.mvplugins.multiverse.core.permissions;
 
-public class CorePermissions {
-    public static String WORLD_ACCESS = "multiverse.access";
-    public static String WORLD_EXEMPT = "multiverse.exempt";
-    public static String GAMEMODE_BYPASS = "mv.bypass.gamemode";
-    public static String PLAYERLIMIT_BYPASS = "mv.bypass.playerlimit";
-    public static final String TELEPORT = "multiverse.teleport";
+final class CorePermissions {
+    /**
+     * Permission to access a world.
+     */
+    static final String WORLD_ACCESS = "multiverse.access";
+
+    /**
+     * Permission to bypass the entry fee of a world.
+     */
+    static final String WORLD_EXEMPT = "multiverse.exempt";
+
+    /**
+     * Permission to bypass the gamemode of a world.
+     */
+    static final String GAMEMODE_BYPASS = "mv.bypass.gamemode";
+
+    /**
+     * Permission to bypass the player limit of a world.
+     */
+    static final String PLAYERLIMIT_BYPASS = "mv.bypass.playerlimit";
+
+    /**
+     * Permission to teleport to a destination.
+     */
+    static final String TELEPORT = "multiverse.teleport";
+
+    private CorePermissions() {
+        // Prevent instantiation as this is a static utility class
+    }
 }