private transient Image delimiterDown;
public ATEGutter(ATEPanel textEditor) {
this.textEditor = textEditor;
this.overlay = new ATEGutterItemOverlay(textEditor.getParentFrame(), this);
collapseDown = IconManager.shared().getIconCollapseDown().getImage();
collapseUp = IconManager.shared().getIconCollapseUp().getImage();
collapse = IconManager.shared().getIconCollapse().getImage();
expand = IconManager.shared().getIconExpand().getImage();