System.Runtime.Serialization.Json.DataContractJsonSerializer.GetKnownTypesFromContext C# (CSharp) Method

        private List<Type> GetKnownTypesFromContext(XmlObjectSerializerContext context, IList<Type> serializerKnownTypeList)
        {
            List<Type> knownTypesList = new List<Type>();
            if (context != null)
            {
                List<XmlQualifiedName> stableNames = new List<XmlQualifiedName>();
                Dictionary<XmlQualifiedName, DataContract>[] entries = context.scopedKnownTypes.dataContractDictionaries;
                if (entries != null)
                {
                    for (int i = 0; i < entries.Length; i++)
                    {
                        Dictionary<XmlQualifiedName, DataContract> entry = entries[i];
                        if (entry != null)
                        {
                            foreach (KeyValuePair<XmlQualifiedName, DataContract> pair in entry)
                            {
                                if (!stableNames.Contains(pair.Key))
                                {
                                    stableNames.Add(pair.Key);
                                    knownTypesList.Add(pair.Value.UnderlyingType);
                                }
                            }
                        }
                    }
                }
                if (serializerKnownTypeList != null)
                {
                    knownTypesList.AddRange(serializerKnownTypeList);
                }
            }
            return knownTypesList;
        }