Adding BoundingBoxLabelerEditor.cs

com.unity.perception/Editor/GroundTruth/BoundingBoxLabelerEditor.cs

+using UnityEngine;
+using UnityEngine.Perception.GroundTruth;
+
+namespace UnityEditor.Perception.GroundTruth
+{
+    [CustomEditor(typeof(BoundingBoxLabeler))]
+    public class BoundingBoxLabelerEditor : Editor
+    {
+        public override void OnInspectorGUI()
+        {
+            // base.OnInspectorGUI();
+            // return;
+            EditorGUILayout.PropertyField(this.serializedObject.FindProperty(nameof(BoundingBoxLabeler.annotationId)));
+            var serializedProperty = this.serializedObject.FindProperty(nameof(BoundingBoxLabeler.labelingConfiguration));
+
+            if (serializedProperty.objectReferenceValue != null)
+            {
+                EditorGUILayout.Separator();
+                var editor = Editor.CreateEditor(serializedProperty.objectReferenceValue);
+                editor.OnInspectorGUI();
+            }
+        }
+    }
+}

com.unity.perception/Editor/GroundTruth/BoundingBoxLabelerEditor.cs.meta

+fileFormatVersion: 2
+guid: d114d25761d742d4806c0f9e2e498764
+timeCreated: 1589407154