@Override public Customers getCustomers() { return new Customers(CustomerRepository.getInstance().getCustomers()); }
@Override public Customer getCustomer(String id) { return CustomerRepository.getInstance().getCustomer(id); }
@Override public void updateCustomer(Customer customer) { CustomerRepository.getInstance().updateCustomer(customer); }
@Override public void removeCustomer(String id) { CustomerRepository.getInstance().removeCustomer(id); }
@Override public Customer createCustomer(Customer customer) { return CustomerRepository.getInstance().createCustomer(customer); }