public void CreateBucket_Should_throw_BucketExistsException_when_bucket_exists()
        {
            Func <Task> act = async() => await _s3Client.CreateBucket("existingbucket");

            act.Should().Throw <BucketExistsException>();
        }
        public void CreateBucket_should_throw_EndpointUnreachableException_when_server_unavailable()
        {
            Func <Task> act = async() => await _s3Client.CreateBucket("test");

            act.Should().Throw <EndpointUnreachableException>();
        }