public void QueryTest()
        {
            var compRepo = new MongoDBRepository <Company>(nameof(Company)).DbCollection;
            var filter   = Builders <Company> .Filter.Eq("_id", ObjectId.Parse("5bd6920d9656412594cf7657"));

            //var filter = Builders<Company>.Filter.Eq("symbol", "GE");
            var result = compRepo.FindAsync(filter).Result.First();

            Assert.AreEqual(result.symbol, "GE");
            Console.WriteLine($"Id:{result._id}, Comp:{result.companyName}");
        }