internal void Find(string content)
        {
            if (string.IsNullOrEmpty(content))
            {
                return;
            }

            if (Searches.Count == 0)
            {
                Activate();
            }
            else
            if (CanAddSearch)
            {
                AppendEmptySearchToTheEnd();
            }

            FocusLastSearch();

            var lastSearch = Searches.LastOrDefault();

            if (lastSearch != null)
            {
                lastSearch.SearchTerm = content;
            }
        }