code: public void add(IConverter converter, Object sourceObject,
  			TypeReference<?> destinationType, Object convertedObject) {
  		convertedObjects.put(new ConvertedObjectsKey(converter, sourceObject,
  				destinationType), convertedObject);
  	}
docs: add a converted object to the pool
  
  @param converter
  the converter that made the conversion
  @param sourceObject
  the source object that has been converted
  @param destinationType
  the destination type
  @param convertedObject
  the converted object