public void Apply(Schema model, ModelFilterContext context)
        {
            var typeNode = _navigator.SelectSingleNode(
                String.Format(TypeExpression, context.SystemType.XmlLookupName()));

            if (typeNode != null)
            {
                var summaryNode = typeNode.SelectSingleNode(SummaryExpression);
                if (summaryNode != null)
                    model.description = summaryNode.ExtractContent();
            }

            foreach (var entry in model.properties)
            {
                var jsonProperty = context.JsonObjectContract.Properties[entry.Key];
                if (jsonProperty == null) continue;

                ApplyPropertyComments(entry.Value, jsonProperty.PropertyInfo());
            }
        }
        private Schema CreateObjectSchema(JsonObjectContract jsonContract)
        {
            var properties = jsonContract.Properties
                .Where(p => !p.Ignored)
                .Where(p => !(_ignoreObsoleteProperties && p.IsObsolete()))
                .ToDictionary(
                    prop => prop.PropertyName,
                    prop => CreateInlineSchema(prop.PropertyType).WithValidationProperties(prop)
                );

            var required = jsonContract.Properties.Where(prop => prop.IsRequired())
                .Select(propInfo => propInfo.PropertyName)
                .ToList();

            var schema = new Schema
            {
                required = required.Any() ? required : null, // required can be null but not empty
                properties = properties,
                type = "object"
            };

            foreach (var filter in _schemaFilters)
            {
                filter.Apply(schema, this, jsonContract.UnderlyingType);
            }

            // NOTE: In next major version, _modelFilters will completely replace _schemaFilters
            var modelFilterContext = new ModelFilterContext(jsonContract.UnderlyingType, jsonContract, this);
            foreach (var filter in _modelFilters)
            {
                filter.Apply(schema, modelFilterContext);
            }

            return schema;
        }