Adding Effects to Armor

 event.getRegistry().register(new ArmorItem(ModItemTier.ModArmorMaterial.TEST, EquipmentSlotType.HEAD,
                new Item.Properties().group(RareMetalsRevised.TAB)).setRegistryName("rhodium_helmet"));
        event.getRegistry().register(new ArmorItem(ModItemTier.ModArmorMaterial.TEST, EquipmentSlotType.CHEST,
                new Item.Properties().group(RareMetalsRevised.TAB)).setRegistryName("rhodium_chestplate"));
        event.getRegistry().register(new ArmorItem(ModItemTier.ModArmorMaterial.TEST, EquipmentSlotType.LEGS,
                new Item.Properties().group(RareMetalsRevised.TAB)).effect.(new EffectInstance(Effects.ABSORPTION,600, 5)).setRegistryName("rhodium_leggings"));
        event.getRegistry().register(new ArmorItem(ModItemTier.ModArmorMaterial.TEST, EquipmentSlotType.FEET,
                new Item.Properties().group(RareMetalsRevised.TAB)).setRegistryName("rhodium_boots"));

the .effect and .setRegistryName is in red