UnityEditor.MonoImporter.GetDefaultReference C# (CSharp) Method

        public extern Object GetDefaultReference(string name);
        [MethodImpl(MethodImplOptions.InternalCall)]

 private void ShowFieldInfo(System.Type type, MonoImporter importer, List <string> names, List <UnityEngine.Object> objects, ref bool didModify)
 {
     if (IsTypeCompatible(type))
     {
         this.ShowFieldInfo(type.BaseType, importer, names, objects, ref didModify);
         foreach (System.Reflection.FieldInfo info in type.GetFields(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly))
         {
             if (!info.IsPublic)
             {
                 object[] customAttributes = info.GetCustomAttributes(typeof(SerializeField), true);
                 if ((customAttributes == null) || (customAttributes.Length == 0))
                 {
                     continue;
                 }
             }
             if (info.FieldType.IsSubclassOf(typeof(UnityEngine.Object)) || (info.FieldType == typeof(UnityEngine.Object)))
             {
                 UnityEngine.Object defaultReference = importer.GetDefaultReference(info.Name);
                 UnityEngine.Object item             = EditorGUILayout.ObjectField(ObjectNames.NicifyVariableName(info.Name), defaultReference, info.FieldType, false, new GUILayoutOption[0]);
                 names.Add(info.Name);
                 objects.Add(item);
                 if (defaultReference != item)
                 {
                     didModify = true;
                 }
             }
         }
     }
 }