code: @Override
  	protected boolean isCacheValid() {
  		return super.isCacheValid()
  				&& StringUtils.equals(cacheProperties.getProperty(JAWR_LOCALE_GENERATOR_FALLBACK_TO_SYSTEM_LOCALE),
  						config.getProperty(JAWR_LOCALE_GENERATOR_FALLBACK_TO_SYSTEM_LOCALE,
  								Boolean.toString(DEFAULT_FALLBACK_TO_SYSTEM_LOCALE)))
  				&& StringUtils.equals(cacheProperties.getProperty(JAWR_LOCALE_GENERATOR_RESOURCE_BUNDLE_CHARSET),
  						config.getProperty(JAWR_LOCALE_GENERATOR_RESOURCE_BUNDLE_CHARSET,
  								DEFAULT_RESOURCE_BUNDLE_CHARSET))
  				&& StringUtils.equals(cacheProperties.getProperty(JAWR_LOCALE_GENERATOR_ADD_QUOTE_TO_MSG_KEY),
  						config.getProperty(JAWR_LOCALE_GENERATOR_ADD_QUOTE_TO_MSG_KEY,
  								Boolean.toString(DEFAULT_VALUE_ADD_QUOTE_TO_MSG_KEY)));
  	}
docs: /*
  (non-Javadoc)
  
  @see net.jawr.web.resource.bundle.generator.AbstractCachedGenerator#
  isCacheValid()