static IEnumerable <TreeNavigator> FindChildNavigators <T> (TreeNavigator navigator, T fieldValue, IDataField <T> field)
{
if (!navigator.MoveToChild())
{
yield break;
}
foreach (var treeNavigator in FindNavigators(fieldValue, field, navigator))
{
yield return(treeNavigator);
}
navigator.MoveToParent();
}
