Wino-Mail/Wino.Core.Domain/Models/MailItem/IMailHashContainer.cs

using System;
using System.Collections.Generic;

namespace Wino.Core.Domain.Models.MailItem;

/// <summary>
/// An interface that returns the UniqueId store for IMailItem.
/// For threads, it may be multiple items.
/// For single mails, it'll always be one item.
/// </summary>
public interface IMailHashContainer
{
    IEnumerable<Guid> GetContainingIds();
}