UnityEditorExtensionMethods

public static bool CustomFoldout(string title, bool display)
        {
            var style = new GUIStyle("ShurikenModuleTitle")
            {
                font = new GUIStyle(EditorStyles.label).font,
                fontStyle = FontStyle.Bold,
                border = new RectOffset(15, 7, 4, 4),
                fixedHeight = 22,
                contentOffset = new Vector2(20f, -2f)
            };
            var rect = GUILayoutUtility.GetRect(16f, 22f, style);
            GUI.Box(rect, title, style);
            var e = Event.current;
            var toggleRect = new Rect(rect.x + 4f, rect.y + 2f, 13f, 13f);
            if (e.type == EventType.Repaint)
            {
                EditorStyles.foldout.Draw(toggleRect, false, false, display, false);
            }
            if (e.type == EventType.MouseDown && rect.Contains(e.mousePosition))
            {
                display = !display;
                e.Use();
            }
            return display;
        }