code: @Override
  	protected StringBuffer doPostProcessBundle(BundleProcessingStatus status, StringBuffer bundleData)
  			throws IOException {
  
  		String data = bundleData.toString();
  
  		// Rewrite each css url path
  		Matcher matcher = IMPORT_PATTERN.matcher(data);
  		StringBuffer sb = new StringBuffer();
  		while (matcher.find()) {
  
  			String content = getCssPathContent(matcher.group(3), matcher.group(4), status);
  			matcher.appendReplacement(sb, RegexUtil.adaptReplacementToMatcher(content));
  		}
  		matcher.appendTail(sb);
  		return sb;
  
  	}
docs: /*
  (non-Javadoc)
  
  @see net.jawr.web.resource.bundle.postprocess.
  AbstractChainedResourceBundlePostProcessor#doPostProcessBundle(net.jawr.
  web.resource.bundle.postprocess .BundleProcessingStatus,
  java.lang.StringBuffer)