diff --git a/common/src/main/java/com/hibiscusmc/hmccosmetics/gui/type/Types.java b/common/src/main/java/com/hibiscusmc/hmccosmetics/gui/type/Types.java
index f8a8563a..2a3ef1e8 100644
--- a/common/src/main/java/com/hibiscusmc/hmccosmetics/gui/type/Types.java
+++ b/common/src/main/java/com/hibiscusmc/hmccosmetics/gui/type/Types.java
@@ -10,21 +10,42 @@ public class Types {
 
     private static final HashMap<String, Type> types = new HashMap<>();
 
-    private static TypeCosmetic TYPE_COSMETIC = new TypeCosmetic();
-    private static TypeEmpty TYPE_EMPTY = new TypeEmpty();
+    private static final TypeCosmetic TYPE_COSMETIC = new TypeCosmetic();
+    private static final TypeEmpty TYPE_EMPTY = new TypeEmpty();
 
+    /**
+     * Get's a Menu Item type. Add custom menu item types with {@link #addType(Type)}
+     * @param id A non-case sensitive ID
+     * @return The type of Menu Item
+     */
     public static Type getType(@NotNull String id) {
         return types.get(id.toUpperCase());
     }
 
+    /**
+     * Checks if a type is valid. Add custom menu item types with {@link #addType(Type)}
+     * @param id A non-case sensitive ID
+     * @return True if exists, False if not.
+     */
     public static boolean isType(@NotNull String id) {
         return types.containsKey(id.toUpperCase());
     }
 
-    public static void addType(Type type) {
-        types.put(type.getId().toUpperCase(), type);
+    /**
+     * Adds a Menu Item Type to the types HashMap for reference. Menu Types will automatically be added using this method.
+     * @param type A non-null {@link Type} that'll be added. ID should be unique; can't be duplicated
+     */
+    public static boolean addType(@NotNull Type type) {
+        String id = type.getId().toUpperCase();
+        if (types.containsKey(id)) return false;
+        types.put(id, type);
+        return true;
     }
 
+    /**
+     * Gets the default menu item; {@link TypeEmpty}
+     * @return The empty menu type.
+     */
     public static TypeEmpty getDefaultType() {
         return TYPE_EMPTY;
     }