/**
* Returns the identifiers of the WantedFixed elements
*
* @return the string identifying the WantedFixed
*/
public Collection<String> getFixedNames() {
return fixed.getElementNames();
}
/**
* Returns the identifiers of the WantedFurniture
*
* @return the string identifying the WantedFurnitures
*/
public Collection<String> getFurnitureNames() {
return furniture.getElementNames();
}