///
/// <param name="trener"></param>
/// <param name="service"></param>
public string ChangeTrener(Trener trener, IDBService service){
return service.ChangeTrener(trener);
}
///
/// <param name="trener"></param>
/// <param name="service"></param>
public string ChangeTrener(Trener trener, IDBService service){
return service.ChangeTrener(trener);
}