/**
* Gets the name of an element.
* \param index the index of the element to set.
* \return the name of the element with the given index.
* \throw XAO_Exception if index is bigger than the size of the list.
*/
/**
* Gets the name of an element.
* \param index the index of the element to set.
* \return the name of the element with the given index.
* \throw XAO_Exception if index is bigger than the size of the list.
*/