title: Accept multiple parameters for API in .NET Core 2.0
body: <p>Here I get always null.</p>
  
  <p>How would I create an endpoint in .Net Core that would accept two POCO? Using just one object everything works.</p>
  
  <pre><code>[HttpPost]
  [Route("Checkout")]
  public IActionResult Checkout([FromBody]Order order, [FromBody]Cart cart)
  {            
      return Ok();
  }
  </code></pre>