code: public boolean parseValue(JsonPullParser parser, OnJsonObjectAddListener listener, String key,
  			T obj) throws IOException, JsonFormatException {
  
  		JsonPropertyCoder<T, ?> dec = map.get(key);
  		if (dec == null) {
  			return false;
  		} else {
  			dec.decode(parser, obj);
  		}
  
  		return true;
  	}
docs: *** Internal use only; please do not call directly. ***<br>
  *** Public access granted only to allow reusing from other packages. ***
  
  @param parser {@link JsonPullParser} in action
  @param listener {@link OnJsonObjectAddListener} to listen new instance creations
  @param key JSON key being parsed
  @param obj target (and like) being rebuilt
  @return True if the given key is parsed successfully, false otherwise
  @throws IOException
  @throws JsonFormatException Data is malformed, or its type is unexpected
  @author vvakame