internal void SetRequestHeaders(HttpRequestMessage request)
{
request.Headers.Clear();
Accept.ForEach(x => request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue(x)));
AcceptEncoding.ForEach(x => request.Headers.AcceptEncoding.Add(new StringWithQualityHeaderValue(x)));
CustomHeaders.ToList().ForEach(x => request.Headers.Add(x.Key, x.Value));
if (request.Content != null)
{
request.Content.Headers.ContentType = new MediaTypeHeaderValue(ContentType);
}
}