private function convertExpandKeysInObjects($expandKeys, $object)
	{
		// only hanlde objects
		if (!is_object($object))
		{
			return $object;
		}

		// spin over each key replacing the date with new format
		foreach (array_keys(get_object_vars($object)) as $key)
		{
			if (array_key_exists($key, $expandKeys))
			{
				$func = $expandKeys[$key] . 'Expander';
				if (method_exists($this, $func))
				{
					$object->$key = $this->$func($object->$key);
				}
			}
		}

		// return object
		return $object;
	}