docs: public static PHPClassDescriptor getClassDescriptor(String className, PHPContainer container, Hashtable<String, PHPClassDescriptor> classCache) throws PHPException {
  		PHPClassDescriptor c = classCache.get(className.toLowerCase());
  		if (c != null) {
  			return c;
  		}
  		Object o = container.getObjectParser().parse("class_exists('" + className + "')");
  		if (o instanceof Boolean) {
  			Boolean exist = (Boolean) o;
  			if (exist) {
  				c = new PHPClassDescriptor(className, container);
  				LOGGER.info("Add in classcache " + className);
  				classCache.put(className.toLowerCase(), c);
  				return c;
  			}
  		}
  		return null;
  	}