Added not supported types example.

Classes that has no empty parameters are not supported and not shown(activator can not create instances of them).

Assets/Textus/SerializeReferenceUI/Core/ManagedReferenceUtility.cs

@@ -51,6 +51,9 @@ public static class ManagedReferenceUtility
             // Skip abstract classes because they should not be instantiated
             if (type.IsAbstract)
                 continue;
+            // Skip types that has no public empty constructors (activator can not create them)    
+            if (type.IsClass && type.GetConstructor(Type.EmptyTypes) == null) // Structs still can be created (strangely)
+                continue;
             // Filter types by provided filters if there is ones
             if (filters != null && filters.All(f => f == null || f.Invoke(type)) == false) 
                 continue;

Assets/Textus/SerializeReferenceUIExample/ExampleOfUsageFromDifferentAssembly/Animals/AnimalStruct.cs

@@ -0,0 +1,8 @@
+using System;
+
+[Serializable]
+public struct AnimalStruct : IAnimal
+{
+    public string name;
+    public void Feed() => throw new NotImplementedException();
+}

Assets/Textus/SerializeReferenceUIExample/ExampleOfUsageFromDifferentAssembly/Animals/AnimalStruct.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: c25ac56f032882a4b972b608e69230cc
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Textus/SerializeReferenceUIExample/ExampleOfUsageFromDifferentAssembly/NotSupportedTypes.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 5be67cbd02bf42146a3ebb2790befebf
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Textus/SerializeReferenceUIExample/ExampleOfUsageFromDifferentAssembly/NotSupportedTypes/ExampleOfNotSupportedTypes.cs

@@ -0,0 +1,27 @@
+using System;
+using UnityEngine;
+
+public class ExampleOfNotSupportedTypes 
+{
+
+}
+
+[Serializable]
+public class AnimalMonoBehaviour : MonoBehaviour, IAnimal
+{
+    public void Feed() => throw new NotImplementedException();
+}
+
+[Serializable]
+public class AnimalScriptableObject : ScriptableObject, IAnimal
+{
+    public void Feed() => throw new NotImplementedException();
+}
+
+[Serializable]
+public class AnimalPrivateConstructor : IAnimal
+{
+    private AnimalPrivateConstructor(){}
+    public void Feed() => throw new NotImplementedException();
+}
+

Assets/Textus/SerializeReferenceUIExample/ExampleOfUsageFromDifferentAssembly/NotSupportedTypes/ExampleOfNotSupportedTypes.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 1060d26326c424a468bfd669381a0745
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Textus/SerializeReferenceUIExample/ExampleOfUsageFromDifferentAssembly/TestingAnimalWorldExample/Scenes/SerializeRefereneceUIExampleScene.unity

@@ -199,12 +199,9 @@ MonoBehaviour:
         numberOfBones: 0
         Tag: 
     00000005:
-      type: {class: RedApe, ns: , asm: SerializedReferenceExample}
+      type: {class: AnimalStruct, ns: , asm: SerializedReferenceExample}
       data:
-        age: 0
+        name: 
-        food: {fileID: 0}
-        numberOfBones: 0
-        Tag: 
     00000006:
       type: {class: BlackApe, ns: , asm: SerializedReferenceExample}
       data: