private List<Completion> GetCompletions(string text, Namespace elements)
        {
            var completions = new List<Completion>();

            if (elements.Children == null)
            {
                completions.Add(new Completion(elements.Description, elements.Description, elements.Description, _glyph,
                    null));
            }
            else
            {
                elements.Children.Items.ForEach(
                    child =>
                        completions.Add(new Completion(child.Description, child.Description, child.Description, _glyph,
                            null)));
            }
            return completions;
        }
        private static Namespace Find(Namespace node, string name)
        {
            if (node == null)
            {
                return null;
            }

            if (node.Alias == name)
            {
                return node;
            }

            return node.Children == null
                ? null
                : node.Children.Items.Select(child => Find(child, name))
                    .FirstOrDefault(found => found != null);
        }