code: @Override
  	public long lastModified() {
  		long lastmod = 0L;
  		try {
  			lastmod = getURI().toURL().openConnection().getLastModified();
  		} catch (IOException ignore) {}
  		return lastmod;
  	}
docs: /* (non-Javadoc)
  @see com.ibm.jaggr.service.resource.IResource#lastModified()