static IEnumerable<SharpTreeNode> SelectChildren(SharpTreeNode node)
{
node.EnsureLazyChildren();
return node.Children.Where(n => n is DelphiFileTreeNode || n is PackageTreeNode || n is PathTreeNode);
}
static IEnumerable<SharpTreeNode> SelectChildren(SharpTreeNode node)
{
node.EnsureLazyChildren();
return node.Children.Where(n => n is DelphiFileTreeNode || n is PackageTreeNode || n is PathTreeNode);
}