UnityEditor.TargetChoiceHandler.DuplicateArrayElement C# (CSharp) Method

        internal static void DuplicateArrayElement(object userData)
        {
            SerializedProperty property = (SerializedProperty) userData;
            property.DuplicateCommand();
            property.serializedObject.ApplyModifiedProperties();
            EditorUtility.ForceReloadInspectors();
        }