public bool has_the_same_value_as(ITrackingId the_other_tracking_id)
{
return (the_other_tracking_id != null) &&
(underlying_id.Equals(the_other_tracking_id.id()));
}
public Cargo(ITrackingId tracking_id, IRouteSpecification route_specification)
{
this.underlying_tracking_id = tracking_id;
this.underlying_route_specification = route_specification;
this.underlying_origin_location = route_specification.origin();
}
