Added PermissionNode#empty

Author: RealMangorage

src/main/java/org/mangorage/mangobotcore/api/command/v1/AbstractCommand.java

@@ -8,7 +8,6 @@
 import org.mangorage.mangobotcore.api.command.v1.info.CommandData;
 import org.mangorage.mangobotcore.api.command.v1.info.CommandPart;
 import org.mangorage.mangobotcore.api.command.v1.info.ParameterPart;
-
 import java.util.ArrayList;
 import java.util.LinkedHashMap;
 import java.util.List;
@@ -40,7 +39,9 @@ public String getDescription() {
     public abstract R getFailedResult();
     public abstract R getNoPermission();
 
-    public abstract PermissionNode<C> getPermissionNode();
+    public PermissionNode<C> getPermissionNode() {
+        return PermissionNode.empty();
+    }
 
     public List<String> aliases() {
         return List.of();

src/main/java/org/mangorage/mangobotcore/api/command/v1/PermissionNode.java

@@ -1,6 +1,12 @@
 package org.mangorage.mangobotcore.api.command.v1;
 
+import org.mangorage.mangobotcore.internal.permission.EmptyPermissionNode;
+
 public interface PermissionNode<C> {
+    static <C> PermissionNode<C> empty() {
+        return EmptyPermissionNode.of();
+    }
+
     String getId();
     boolean hasPermission(CommandContext<C> commandContext);
 }

src/main/java/org/mangorage/mangobotcore/internal/permission/EmptyPermissionNode.java

@@ -0,0 +1,25 @@
+package org.mangorage.mangobotcore.internal.permission;
+
+import org.mangorage.mangobotcore.api.command.v1.CommandContext;
+import org.mangorage.mangobotcore.api.command.v1.PermissionNode;
+
+public final class EmptyPermissionNode<C> implements PermissionNode<C> {
+
+    private static final EmptyPermissionNode<?> INSTANCE = new EmptyPermissionNode<>();
+
+    public static <C> EmptyPermissionNode<C> of() {
+        return (EmptyPermissionNode<C>) INSTANCE;
+    }
+
+    EmptyPermissionNode() {}
+
+    @Override
+    public String getId() {
+        return "empty";
+    }
+
+    @Override
+    public boolean hasPermission(CommandContext<C> commandContext) {
+        return true;
+    }
+}