private void restoreBorder() {
			if (defaultBorder != null) {
				setBorder(defaultBorder);
			}
			else {
				setBorder(NO_BORDER);
			}
		}
Returns the directory with which this button is associated.
Ghidra/Framework/Docking/src/main/java/docking/widgets/filechooser/FileChooserToggleButton.java