code: @Override
  	public Map<String, VariantSet> getAvailableVariants(String resource) {
  
  		List<String> localeVariants = getAvailableLocales(resource);
  		if (localeVariants.isEmpty()) {
  			throw new BundlingProcessException("Enable to find the resource bundle : " + resource);
  		}
  		Map<String, VariantSet> variants = new HashMap<>();
  		VariantSet variantSet = new VariantSet(JawrConstant.LOCALE_VARIANT_TYPE, "", localeVariants);
  		variants.put(JawrConstant.LOCALE_VARIANT_TYPE, variantSet);
  		return variants;
  	}
docs: /*
  (non-Javadoc)
  
  @see
  net.jawr.web.resource.bundle.generator.variant.VariantResourceGenerator
  #getAvailableVariants(java.lang.String)