Disco.Services.Interop.ActiveDirectory.ActiveDirectoryContext.UpdateSearchContainers C# (CSharp) Method

        public void UpdateSearchContainers(DiscoDataContext Database, IEnumerable<string> Containers)
        {
            Dictionary<string, List<string>> searchContainers = null;

            if (Containers != null)
            {
                searchContainers = Containers
                    .Where(c => !string.IsNullOrWhiteSpace(c))
                    .Distinct()
                    .Select(c =>
                    {
                        ADDomain d;
                        if (TryGetDomainFromDistinguishedName(c, out d))
                            return Tuple.Create(d, c);
                        else
                            return null;
                    }).Where(i => i != null)
                    .GroupBy(i => i.Item1)
                    .ToDictionary(g => g.Key.Name.ToLower(), g => g.Select(i => i.Item2).ToList());
            }

            if (searchContainers == null || searchContainers.Count == 0)
            {
                Database.DiscoConfiguration.ActiveDirectory.SearchContainers = null;
                ReinitializeSearchContainers(null);
            }
            else
            {
                Database.DiscoConfiguration.ActiveDirectory.SearchContainers = searchContainers;
                ReinitializeSearchContainers(searchContainers);
            }
        }