{
  $jsonSchema: {
    bsonType: 'object',
    required: [
      'Name',
      'CategoryTemplateId',
      'ParentCategoryId',
      'PictureId',
      'PageSize',
      'AllowCustomersToSelectPageSize',
      'ShowOnHomepage',
      'IncludeInTopMenu',
      'SubjectToAcl',
      'LimitedToStores',
      'Published',
      'Deleted',
      'DisplayOrder',
      'CreatedOnUtc',
      'UpdatedOnUtc'
    ],
    properties: {
      Name: {
        bsonType: 'string',
        maxLength: 400
      },
      MetaKeywords: {
        bsonType: 'string',
        maxLength: 400
      },
      MetaTitle: {
        bsonType: 'string',
        maxLength: 400
      },
      PriceRanges: {
        bsonType: 'string',
        maxLength: 400
      },
      PageSizeOptions: {
        bsonType: 'string',
        maxLength: 200
      },
      Description: {
        bsonType: 'string',
        maxLength: 2147483647
      },
      CategoryTemplateId: {
        bsonType: 'int'
      },
      MetaDescription: {
        bsonType: 'string',
        maxLength: 2147483647
      },
      ParentCategoryId: {
        bsonType: 'int'
      },
      PictureId: {
        bsonType: 'int'
      },
      PageSize: {
        bsonType: 'int'
      },
      AllowCustomersToSelectPageSize: {
        bsonType: 'bool'
      },
      ShowOnHomepage: {
        bsonType: 'bool'
      },
      IncludeInTopMenu: {
        bsonType: 'bool'
      },
      SubjectToAcl: {
        bsonType: 'bool'
      },
      LimitedToStores: {
        bsonType: 'bool'
      },
      Published: {
        bsonType: 'bool'
      },
      Deleted: {
        bsonType: 'bool'
      },
      DisplayOrder: {
        bsonType: 'int'
      },
      CreatedOnUtc: {
        bsonType: 'date'
      },
      UpdatedOnUtc: {
        bsonType: 'date'
      }
    }
  }
}

An exception of type 'System.InvalidOperationException' occurred in MongoDB.Driver.dll but was not handled in user code: 'Cannot find serializer for mtest.Category.Aggregate([{ "$match" : { "Published" : true } }]).'   at MongoDB.Driver.Linq.Linq3Implementation.Serializers.KnownSerializers.KnownSerializersRegistry.GetSerializer(Expression expression, IBsonSerializer defaultSerializer)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.ConstantExpressionToAggregationExpressionTranslator.Translate(TranslationContext context, ConstantExpression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.ExpressionToAggregationExpressionTranslator.Translate(TranslationContext context, Expression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.MethodTranslators.AnyMethodToAggregationExpressionTranslator.Translate(TranslationContext context, MethodCallExpression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.MethodCallExpressionToAggregationExpressionTranslator.Translate(TranslationContext context, MethodCallExpression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToAggregationExpressionTranslators.ExpressionToAggregationExpressionTranslator.Translate(TranslationContext context, Expression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToFilterTranslators.ExpressionToFilterTranslator.TranslateUsingAggregationOperators(TranslationContext context, Expression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToFilterTranslators.ExpressionToFilterTranslator.Translate(TranslationContext context, Expression expression, Boolean exprOk)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToFilterTranslators.ExpressionToFilterTranslator.TranslateLambda(TranslationContext context, LambdaExpression lambdaExpression, IBsonSerializer parameterSerializer)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.WhereMethodToPipelineTranslator.Translate(TranslationContext context, MethodCallExpression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.ExpressionToPipelineTranslator.Translate(TranslationContext context, Expression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.OrderByMethodToPipelineTranslator.Translate(TranslationContext context, MethodCallExpression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.ExpressionToPipelineTranslator.Translate(TranslationContext context, Expression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.OrderByMethodToPipelineTranslator.Translate(TranslationContext context, MethodCallExpression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.ExpressionToPipelineTranslator.Translate(TranslationContext context, Expression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToExecutableQueryTranslators.ExpressionToExecutableQueryTranslator.Translate[TDocument,TOutput](MongoQueryProvider`1 provider, Expression expression)
   at MongoDB.Driver.Linq.Linq3Implementation.MongoQuery`2.Execute()
   at MongoDB.Driver.Linq.Linq3Implementation.MongoQuery`2.GetEnumerator()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)