Update Example

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Samples/GetStarted/Scripts/Runtime/Example.cs

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+#if UNITY_2019_3_OR_NEWER
+
+#pragma warning disable CA1034 // Nested types should not be visible
+#pragma warning disable CA2235 // Mark all non-serializable fields
+
+using System;
+using UnityEngine;
+
+namespace MackySoft.SerializeReferenceExtensions.Example {
+
+	public class Example : MonoBehaviour {
+
+		// The type that implements ICommand will be displayed in the popup.
+		[SerializeReference, SubclassSelector]
+		ICommand m_Command;
+
+		// Collection support
+		[SerializeReference, SubclassSelector]
+		ICommand[] m_Commands = Array.Empty<ICommand>();
+
+		void Start () {
+			m_Command?.Execute();
+
+			foreach (ICommand command in m_Commands) {
+				command?.Execute();
+			}
+		}
+
+		// Nested type support
+		[Serializable]
+		public class NestedCommand : ICommand {
+			public void Execute () {
+				Debug.Log("Execute NestedCommand");
+			}
+		}
+
+	}
+
+	public interface ICommand {
+		void Execute ();
+	}
+
+	[Serializable]
+	public class DebugCommand : ICommand {
+		[SerializeField]
+		string m_Message;
+		public void Execute () {
+			Debug.Log(m_Message);
+		}
+	}
+
+	[Serializable]
+	public class InstantiateCommand : ICommand {
+
+		[SerializeField]
+		GameObject m_Prefab;
+
+		public void Execute () {
+			UnityEngine.Object.Instantiate(m_Prefab,Vector3.zero,Quaternion.identity);
+		}
+	}
+
+	// Menu override support
+	[AddTypeMenu("Example/Add Type Menu Command")]
+	[Serializable]
+	public class AddTypeMenuCommand : ICommand {
+		public void Execute () {
+			Debug.Log("Execute AddTypeMenuCommand");
+		}
+	}
+
+	[Serializable]
+	public struct StructCommand : ICommand {
+		public void Execute () {
+			Debug.Log("Execute StructCommand");
+		}
+	}
+
+}
+#endif

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Samples/GetStarted/Scripts/Runtime/Example.cs.meta

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Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Samples/GetStarted/Scripts/Runtime/MackySoft.SerializeReferenceExtensions.Example.GetStarted.asmdef

@@ -0,0 +1,16 @@
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Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Samples/GetStarted/Scripts/Runtime/MackySoft.SerializeReferenceExtensions.Example.GetStarted.asmdef.meta

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