/// <summary>
        /// Add <paramref name="tldRule"/> to <paramref name="structure"/>.
        /// </summary>
        /// <param name="structure">The structure to appened the rule.</param>
        /// <param name="tldRule">The rule to append.</param>
        public static void AddRule(this DomainDataStructure structure, TldRule tldRule)
        {
            var parts = tldRule.Name.Split('.').Reverse().ToList();

            for (var i = 0; i < parts.Count; i++)
            {
                var domainPart = parts[i];
                if (parts.Count - 1 > i)
                {
                    if (!structure.Nested.ContainsKey(domainPart))
                    {
                        structure.Nested.Add(domainPart, new DomainDataStructure(domainPart));
                    }

                    structure = structure.Nested[domainPart];
                    continue;
                }

                if (structure.Nested.ContainsKey(domainPart))
                {
                    structure.Nested[domainPart].TldRule = tldRule;
                    continue;
                }

                structure.Nested.Add(domainPart, new DomainDataStructure(domainPart, tldRule));
            }
        }
 /// <summary>
 /// Add all the rules in <paramref name="tldRules"/> to <paramref name="structure"/>.
 /// </summary>
 /// <param name="structure">The structure to appened the rule.</param>
 /// <param name="tldRules">The rules to append.</param>
 public static void AddRules(this DomainDataStructure structure, IEnumerable <TldRule> tldRules)
 {
     foreach (var tldRule in tldRules)
     {
         structure.AddRule(tldRule);
     }
 }