Def load selection and basic def alteration

Assets/Scripts/Extensions/IListExtensions.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+public static class IListExtensions
+{
+	public static bool NullOrEmpty<T>(this IList<T> list)
+	{
+		return list == null || list.Any() == false;
+	}
+
+	public static bool NotNullOrEmpty<T>(this IList<T> list)
+	{
+		return NullOrEmpty<T>(list) == false;
+	}
+}
+

Assets/Scripts/Extensions/IListExtensions.cs.meta

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Assets/Scripts/Extensions/TransformExtensions.cs

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+using UnityEngine;
+using System.Collections;
+using System.Collections.Generic;
+
+public static class TransformExtensions
+{
+    public static Transform FindDeepChild(this Transform parent, string childName)
+    {
+        Queue<Transform> queue = new Queue<Transform>();
+        queue.Enqueue(parent);
+
+        while (queue.Count > 0)
+        {
+            var c = queue.Dequeue();
+            if (c.name == childName)
+                return c;
+            foreach (Transform t in c)
+                queue.Enqueue(t);
+        }
+
+        return null;
+    }
+}
+

Assets/Scripts/Extensions/TransformExtensions.cs.meta

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