private async Task <Dictionary <int, TotalVotes> > GetVoteData(string userId, int[] symbolIds)
{
var httpMessage = new HttpRequestMessage(HttpMethod.Get, ApiPath.GetVotes(symbolIds));
httpMessage.Headers.Add(TestAuthHandler.CustomUserIdHeader, userId);
var fetchResponse = await _client.SendAsync(httpMessage);
fetchResponse.EnsureSuccessStatusCode();
Dictionary <int, TotalVotes> voteData = await fetchResponse.Content.ReadAsAsync <Dictionary <int, TotalVotes> >();
return(voteData);
}