public void ChangeDrpParticipation()
{
var stock = new Stock(Guid.NewGuid());
stock.List("ABC", "ABC Pty Ltd", new Date(1974, 01, 01), false, AssetCategory.AustralianStocks);
var holding = new Holding(stock, new Date(2000, 01, 01));
holding.ChangeDrpParticipation(true);
holding.Settings.ParticipateInDrp.Should().BeTrue();
}