New system for recycler registry, juste wool and clay not work, i d'ont why this not work :/

src/main/java/techreborn/api/ScrapboxList.java

@@ -12,6 +12,17 @@ public class ScrapboxList
 
 	public static void addItemStackToList(ItemStack stack)
 	{
+		if (!hasItems(stack))
 			stacks.add(stack);
 	}
+
+	private static boolean hasItems(ItemStack stack)
+	{
+		for (ItemStack s : stacks)
+		{
+			if (stack.getItem().getItemStackDisplayName(stack).equals(s.getItem().getItemStackDisplayName(stack)))
+				return true;
+		}
+		return false;
+	}
 }