public void move_to(Address address)
 {
     _address = address;
 }
 public ChangeCustomerAddressCommand(Address address, int customer_id)
 {
     this.address = address;
     this.customer_id = customer_id;
 }
 public Customer(Name name, Address address, EmailAddress email)
 {
     this._email = email;
     _name = name;
     _address = address;
 }