- (NSString *)name
{
   if(name) {
      return name;
   }
   return @"--nieznane--";
}

- (NSNumber *)age
{
   if(age) {
      return age;
   } 
   return [NSNumber numberWithInt:-1];
}

- (Gender)gender
{
   if(gender){
      return gender;
   }
   return -1;
}

- (void)setName:(NSString *)_name
{
   name = _name;
}

- (void)setAge:(NSNumber *)_age
{
   age = _age;
}

- (void)setGender:(Gender)_gender
{
   gender = _gender;
}
