/// <summary>
/// Release an allocated ID for a feature that is being removed due to an undo.
/// This nulls out the reference to the ID from its enclosing ID packet.
/// </summary>
/// <param name="id">The ID that should be returned to the pool of available IDs.</param>
internal void ReleaseId(NativeId id)
{
IdPacket p = FindPacket(id);
if (p == null)
{
throw new ApplicationException("Cannot locate packet for ID: " + id.FormattedKey);
}
p.DeleteId(id);
}
