class HospitalEmployee { constructor(name) { this._name = name; this._remainingVacationDays = 20; } get name() { return this._name; } get remainingVacationDays() { return this._remainingVacationDays; } takeVacationDays(daysOff) { this._remainingVacationDays -= daysOff; } } class Nurse extends HospitalEmployee { constructor(name,certifications) { super(name); //super(remainingVacationDays); this._certifications = certifications; } } const nurseOlynyk = new Nurse('Olynyk', ['Trauma', 'Pediatrics']); console.log(nurseOlynyk._certifications);