//TODO: Add verification that the one doing the change is part of the building
/// <summary>
/// Chnages apartments for a tenant
/// </summary>
/// <param name="userId">The Id of the User that connects to the Tenant</param>
/// <param name="apartmentId">The Id of the new Apartment</param>
/// <returns>Returns the Interface the newly updated Tenant</returns>
public ITenant ChangeApartment(string userId, int apartmentId)
{
var tenant = _personRegister.ChangeApartment(userId, apartmentId);
return(tenant);
}