ModelLoader.setCustomStateMapper(ModBlocks.blockPaperwall, new StateMap.Builder().withName(BlockPaperwall.VARIANT).build());

        for(final BlockPaperwall.EnumType type: BlockPaperwall.EnumType.values())
        {
            ModelLoader.setCustomModelResourceLocation(new ItemBlock(ModBlocks.blockPaperwall), type.getMetadata(),
                    new ModelResourceLocation(Constants.MOD_ID, BlockPaperwall.BLOCK_NAME + "_" + type.getName()));
        }