public void Scatter_DuplicateResponses()
{
var target = new Scatter <int>();
var id = Guid.NewGuid();
target.AddParticipant(id);
target.AddResponse(id, ScatterResponse <int> .Success(id, "A", 5));
target.AddResponse(id, ScatterResponse <int> .Success(id, "A", 6));
var response = target.GatherResponses();
response.Count.Should().Be(1);
response[0].Value.Should().Be(5);
}