public Sponsor(
int id = default,
Event sponsoredevent = default,
Company sponsoringcompany = default,
SponsorLevel sponsorshiplevel = default
)
{
this.Id = id;
this.SponsoredEvent = new Event(sponsoredevent);
this.SponsoringCompany = new Company(sponsoringcompany);
this.SponsorshipLevel = new SponsorLevel(sponsorshiplevel);
}
public Sponsor WithSponsorshipLevel(SponsorLevel sponsorshiplevel) => new Sponsor(this.Id, this.SponsoredEvent, this.SponsoringCompany, sponsorshiplevel);