@EventHandler
public void onSingleRepair (SingleRepairEvent event ) {
    Player player = event. getPlayer ( ) ;
    ItemStack item = event. getItem ( ) ;

    double moneyCost = event. getMoneyCost ( ) ;
    int levelCost = event. getLevelCost ( ) ;

    // Your code here...
}
 
@EventHandler
public void onMultiRepair (MultiRepairEvent event ) {
    Player player = event. getPlayer ( ) ;
    List <ItemStack > items = event. getItems ( ) ;
   
    double moneyCost = event. getMoneyCost ( ) ;
    int levelCost = event. getLevelCost ( ) ;
     
    // Your code here...
}