code: public void append(Map<?, ?> map) {
  		if (map == null || map.size() == 0)
  			return;
  
  		for (Map.Entry<?, ?> entry : map.entrySet()) {
  			String key = StringConverter.toString(entry.getKey());
  			Object value = entry.getValue();
  			super.put(key, value);
  		}
  	}
docs: Appends new elements to this map.
  
  @param map a map with elements to be added.