Support for required fields.

Change-Id: I560c7ca11b3d665eecafb528f3737b7e139ca9b0
Tested: on Linux and Windows.
diff --git a/tests/monsterdata_test.golden b/tests/monsterdata_test.golden
index ca63f42..9e41034 100644
--- a/tests/monsterdata_test.golden
+++ b/tests/monsterdata_test.golden
@@ -21,7 +21,7 @@
   ],
   test_type: Monster,
   test: {
-    hp: 20
+    name: "Fred"
   },
   test4: [
     {
@@ -36,7 +36,5 @@
   testarrayofstring: [
     "test1",
     "test2"
-  ],
-  testempty: {
-  }
+  ]
 }