/// <summary>
/// Determines whether the specified grain is an implicit subscriber of a given stream.
/// </summary>
/// <param name="grainId">The grain identifier.</param>
/// <param name="streamId">The stream identifier.</param>
/// <returns>true if the grain id describes an implicit subscriber of the stream described by the stream id.</returns>
internal bool IsImplicitSubscriber(GrainId grainId, StreamId streamId)
{
return(grainId.IsLegacyGrain() && HasImplicitSubscription(streamId.Namespace, LegacyGrainId.FromGrainId(grainId).TypeCode));
}