JsonSchemaNode
                    class JsonSchemaNode
                
                using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
namespace Newtonsoft.Json.Schema
{
    [Obsolete("JSON Schema validation has been moved to its own package. See http://www.newtonsoft.com/jsonschema for more details.")]
    internal class JsonSchemaNode
    {
        public string Id { get; }
        public ReadOnlyCollection<JsonSchema> Schemas { get; }
        public Dictionary<string, JsonSchemaNode> Properties { get; }
        public Dictionary<string, JsonSchemaNode> PatternProperties { get; }
        public List<JsonSchemaNode> Items { get; }
        public JsonSchemaNode AdditionalProperties { get; set; }
        public JsonSchemaNode AdditionalItems { get; set; }
        public JsonSchemaNode(JsonSchema schema)
        {
            Schemas = new ReadOnlyCollection<JsonSchema>(new JsonSchema[1] {
                schema
            });
            Properties = new Dictionary<string, JsonSchemaNode>();
            PatternProperties = new Dictionary<string, JsonSchemaNode>();
            Items = new List<JsonSchemaNode>();
            Id = GetId(Schemas);
        }
        private JsonSchemaNode(JsonSchemaNode source, JsonSchema schema)
        {
            Schemas = new ReadOnlyCollection<JsonSchema>(source.Schemas.Union(new JsonSchema[1] {
                schema
            }).ToList());
            Properties = new Dictionary<string, JsonSchemaNode>(source.Properties);
            PatternProperties = new Dictionary<string, JsonSchemaNode>(source.PatternProperties);
            Items = new List<JsonSchemaNode>(source.Items);
            AdditionalProperties = source.AdditionalProperties;
            AdditionalItems = source.AdditionalItems;
            Id = GetId(Schemas);
        }
        public JsonSchemaNode Combine(JsonSchema schema)
        {
            return new JsonSchemaNode(this, schema);
        }
        public static string GetId(IEnumerable<JsonSchema> schemata)
        {
            return string.Join("-", (from s in schemata
            select s.InternalId).OrderBy((string id) => id, StringComparer.Ordinal));
        }
    }
}