public PairwaiseModule(IPairwiseSequenceProvider provider)
        {
            _provider = provider;

            Post["/Align/Pairwise/Metadata"] = _ =>
            {
                var data = (SequenceModel[])NancyExtensionToPost.GetData <SequenceModel[]>(Request.Query);
                return(Response.AsJson(_provider.GetMetadata(data)));
            };
        }
        public void should_return_empty_metadata_for_sequences()
        {
            var result = _sut.GetMetadata(new[] { new SequenceModel() });

            result.ShouldBeEmpty();
        }