public void validate_core_schema()
        {
            var documentExecuter = new DocumentExecuter();
            var executionResult  = documentExecuter.ExecuteAsync(new Schema(), null, SchemaIntrospection.IntrospectionQuery, null).Result;
            var json             = new DocumentWriter(true).Write(executionResult.Data);

            json.ShouldEqual(IntrospectionResult.Data);
        }