public void AddReference_NotExisting_AddToKnown()
        {
            var knownDtosInitialCount = _knownDtos.Count;

            _clientReferenceResolver.AddReference(this, _mockObject.DtoGuid.ToString(), _mockObject);

            Assert.AreEqual(knownDtosInitialCount + 1, _knownDtos.Count);
            _knownDtos[_mockObject.DtoGuid].TryGetTarget(out var target);
            Assert.AreEqual(_mockObject, target);
        }