public class IMetaItemBlock extends ItemColored {

    protected IProperty mappingProperty;

    public IMetaItemBlock(Block block) {
        super(block, true);
    }

    @Nonnull
    @Override
    public String getUnlocalizedName(@Nonnull ItemStack stack) {
        if (mappingProperty == null) {
            return super.getUnlocalizedName(stack);
        }

        IBlockState state = block.getStateFromMeta(stack.getMetadata());
        String name = state.getValue(mappingProperty).toString().toLowerCase(Locale.US);
        return super.getUnlocalizedName(stack) + "." + name;
    }

}