Fixed: broke dependency between action results and json:api error document structure

Author: Bart Koelman

src/JsonApiDotNetCore/Controllers/JsonApiControllerMixin.cs

@@ -23,7 +23,11 @@ protected IActionResult Error(Error error)
         protected IActionResult Errors(IEnumerable<Error> errors)
         {
             var document = new ErrorDocument(errors.ToList());
-            return document.AsActionResult();
+
+            return new ObjectResult(document)
+            {
+                StatusCode = (int) document.GetErrorStatusCode()
+            };
         }
     }
 }

src/JsonApiDotNetCore/Models/JsonApiDocuments/ErrorDocument.cs

@@ -1,7 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;
-using Microsoft.AspNetCore.Mvc;
 
 namespace JsonApiDotNetCore.Models.JsonApiDocuments
 {
@@ -37,13 +36,5 @@ public HttpStatusCode GetErrorStatusCode()
             var statusCode = int.Parse(statusCodes.Max().ToString()[0] + "00");
             return (HttpStatusCode)statusCode;
         }
-
-        public IActionResult AsActionResult()
-        {
-            return new ObjectResult(this)
-            {
-                StatusCode = (int)GetErrorStatusCode()
-            };
-        }
     }
 }