test

My project/Library/PackageCache/com.unity.timeline/Samples~/Customization/Tween/Editor/Timeline.Samples.Tween.Editor.asmdef

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+    "name": "Timeline.Samples.Tween.Editor",
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+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": [],
+    "versionDefines": [],
+    "noEngineReferences": false
+}

My project/Library/PackageCache/com.unity.timeline/Samples~/Customization/Tween/Editor/Timeline.Samples.Tween.Editor.asmdef.meta

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My project/Library/PackageCache/com.unity.timeline/Samples~/Customization/Tween/Editor/TweenClipEditor.cs

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+using UnityEditor;
+using UnityEditor.Timeline;
+using UnityEngine;
+using UnityEngine.Playables;
+using UnityEngine.Timeline;
+
+namespace Timeline.Samples
+{
+    // Editor used by the TimelineEditor to customize the view of TweenClip.
+    [CustomTimelineEditor(typeof(TweenClip))]
+    public class TweenClipEditor : ClipEditor
+    {
+        static GUIStyle s_StartTextStyle;
+        static GUIStyle s_EndTextStyle;
+
+        static TweenClipEditor()
+        {
+            s_StartTextStyle = GUI.skin.label;
+            s_EndTextStyle = new GUIStyle(GUI.skin.label) { alignment = TextAnchor.MiddleRight };
+        }
+
+        // Called by the Timeline editor to draw the background of a TweenClip.
+        public override void DrawBackground(TimelineClip clip, ClipBackgroundRegion region)
+        {
+            TweenClip asset = clip.asset as TweenClip;
+
+            if (asset == null)
+                return;
+
+            PlayableDirector director = TimelineEditor.inspectedDirector;
+
+            if (director == null)
+                return;
+
+            Transform startLocation = director.GetReferenceValue(asset.startLocation.exposedName, out bool startFound) as Transform;
+            Transform endLocation = director.GetReferenceValue(asset.endLocation.exposedName, out bool endFound) as Transform;
+
+            if (startFound && startLocation != null)
+                EditorGUI.LabelField(region.position, startLocation.gameObject.name, s_StartTextStyle);
+
+            if (endFound && endLocation != null)
+                EditorGUI.LabelField(region.position, endLocation.gameObject.name, s_EndTextStyle);
+        }
+    }
+}

My project/Library/PackageCache/com.unity.timeline/Samples~/Customization/Tween/Editor/TweenClipEditor.cs.meta

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