public void deleteCustomerById(int id) {

    customerDao.deleteCustomerById(id);
  }
  public Customer getCustomerByEmployee(Employee employee) {

    return customerDao.getCustomerByEmployee(employee);
  }
  public void updateCustomer(Customer customer) {

    customerDao.updateCustomer(customer);
  }
  public Customer getCustomerById(int id) {

    return customerDao.getCustomerById(id);
  }
  public void createCustomer(Customer customer) {

    customerDao.createCustomer(customer);
  }
  public List<Customer> getCustomers() {

    return customerDao.getCustomers();
  }