public HeroBuilder OfWizardClass()
 {
     _class = HeroClass.Wizard;
     _modificator = new CharacteristicsModificator(strength: -2, spirit: 2);
     return this;
 }
 public HeroBuilder OfThiefClass()
 {
     _class = HeroClass.Thief;
     _modificator = CharacteristicsModificator.Void;
     return this;
 }
 public HeroBuilder OfWarriorClass()
 {
     _class = HeroClass.Warrior;
     _modificator = new CharacteristicsModificator(strength: 2, spirit: -2);
     return this;
 }