public void RetrieveVerityPublicDid_exceptionWhenNon200()
        {
            Assert.ThrowsException <IOException>(() =>
            {
                var httpClient = getHttpClient("{}");

                Did did = VerityUtil.retrieveVerityPublicDid("http://localhost", httpClient);
            });
        }
        public void RetrieveVerityPublicDid_canMock()
        {
            var httpClient = getHttpClient("{\"DID\":\"CV65RFpeCtPu82hNF9i61G\",\"verKey\":\"7G3LhXFKXKTMv7XGx1Qc9wqkMbwcU2iLBHL8x1JXWWC2\"}");

            Did did = VerityUtil.retrieveVerityPublicDid("http://localhost", httpClient);

            Assert.AreEqual("CV65RFpeCtPu82hNF9i61G", did.did);
            Assert.AreEqual("7G3LhXFKXKTMv7XGx1Qc9wqkMbwcU2iLBHL8x1JXWWC2", did.verkey);
        }