Mapsui.Providers.ArcGIS.Dynamic.ArcGisLegend.CreateRequest C# (CSharp) Method

        private HttpWebRequest CreateRequest(string serviceUrl, ICredentials credentials)
        {
            var trailing = serviceUrl.Contains("?") ? "&" : "?";
            var requestUrl = $"{serviceUrl}/legend{trailing}f=json";
            _webRequest = (HttpWebRequest)WebRequest.Create(requestUrl);
            if (credentials == null)
                _webRequest.UseDefaultCredentials = true;
            else
                _webRequest.Credentials = credentials;

            return _webRequest;
        }