public static bool AffectsFolder(this DeltaSet <Message> changes, string folderId)
{
return(changes.Any(c => c.Entity.FolderId == folderId));
}
/// <summary>
/// Gets all message changes for a given folder.
/// </summary>
/// <param name="changes">The delta set.</param>
/// <param name="folderId">The folder's id to get changes for.</param>
/// <returns>An instance of <see cref="IEnumerable{T}"/> containing all message changes for the given folder, lazily evaluated.</returns>
public static IEnumerable <DeltaEntity <Message> > ForFolder(
this DeltaSet <Message> changes,
string folderId)
{
return(changes.Where(c => c.Entity.FolderId == folderId));
}
