private void RenderIssue([NotNull] string group, [NotNull] ValidationIssue issue)
{
Debug.ArgumentNotNull(group, nameof(group));
Debug.ArgumentNotNull(issue, nameof(issue));
var path = GetPath(group, issue);
var collection = Issues.FindPath(path, GetNode);
if (collection == null)
{
return;
}
var treeViewItem = GetLeaf(issue, issue.Text, issue.Icon);
collection.Add(treeViewItem);
}