internal StrictOrphanList(TreeOrphan orphan)
{
if (orphan == null)
{
throw new ArgumentNullException(nameof(orphan));
}
children = new ArrayElement <TreeOrphan> [1];
children[0].Value = orphan;
}
internal OrphanList(TreeOrphan orphan) : this(new StrictOrphanList(orphan))
{
}