title: Restsharp: IRestResponse content returns "[]"
body: <p>I am trying to implement a test of my rest api using restsharp, which seems to be a very powerful and easy tool to use for simple tests.</p>
  
  <p>With that said I still have problems getting content from my IRestResponse.</p>
  
  <p>The code goes as following:</p>
  
  <pre><code>...
      [TestMethod]
      public void Testing_Whether_Get_Returns_cellphone()
      {
          // Arrange
          RestClient restClient = new RestClient("http://pseudoUrl/Users?UserId={uid}");       
          //restClient.AddDefaultHeader("headerType1", Guid.NewGuid().ToString());
          //restClient.AddDefaultUrlSegment("uid", "25248896");
          RestRequest restRequest = new RestRequest(Method.GET);
          restRequest.AddQueryParameter("uid", "25248896");
          restRequest.AddHeader("headerType1", Guid.NewGuid().ToString());
          // Act
          IRestResponse restResponse = restClient.Execute(restRequest); // restresponse = "StatusCode: Ok.."
          string response = restResponse.Content; // response = "[]"
  
          // Assert
          Assert.IsTrue(response.Contains("cellphone"));
      }
  ...
  </code></pre>
  
  <p>When testing the above, the statuscode is 200, but content is "[]", even though that when I test it with swagger, I get a nice json-response filled with the wanted content.</p>
  
  <p>As you can see I have tried using both AddDefaultUrlSegment and AddQueryParameter. The last one is the most obvious, I guess?</p>
  
  <p>the following url in swagger is: "<a href="http://pseudoUrl/Users?UserId=25248896" rel="nofollow noreferrer">http://pseudoUrl/Users?UserId=25248896</a>" added the header: headerType1 and again - that works perfectly fine.</p>
  
  <p>Can anyone see, what I am doing wrong?</p>