public void SetStandardHeaders(WebRequest request, IApiConfiguration configuration, ICompanyFileCredentials credentials, OAuthTokens oauth = null)
{
request.Headers[HttpRequestHeader.Authorization] = string.Format("Bearer {0}", oauth.Maybe(_ => _.AccessToken, string.Empty));
request.Headers[HttpRequestHeader.AcceptEncoding] = "gzip";
request.Headers["x-myobapi-key"] = configuration.ClientId;
request.Headers["x-myobapi-version"] = "v2";
request.Headers["x-myobapi-cftoken"] = Convert.ToBase64String(Encoding.UTF8.GetBytes(string.Format("{0}:{1}",
credentials.Maybe(_ => _.Username).Maybe(_ => _, string.Empty), credentials.Maybe(_ => _.Password).Maybe(_ => _, string.Empty))));
}
