RadzenCheckBoxList bound to HashSet<string>

Radzen.Blazor Components
1

My data model class has:
public HashSet<string> TransitDays { get; set; }
My Radzen component is trying to bind a RadzenCheckBoxList to that model:

<RadzenCheckBoxList @bind-Value="model.TransitDays" Orientation="Orientation.Vertical">
    <Items>
        @foreach (var day in days)
        {
            <RadzenCheckBoxListItem Value="@day" Text="@day" />
        }
    </Items>
</RadzenCheckBoxList>

(days is a List of day names)

Receiving a compiler error: Arugment 8: cannot convert from ...EventCallback<...HashSet> to ...EventCallback<...IEnumerable>

What am I missing here?

2

Moving away from the bind, this seems to work:

<RadzenCheckBoxList Value="model.TransitDays" TValue="string" Change="@(args => model.TransitDays = args.ToHashSet())" Orientation="Orientation.Vertical">