@Override
	protected void paintIcon( Component c, Graphics2D g ) {
		paintBackground( c, g );

		g.setColor( c.getForeground() );
		g.fillRect( (width / 2) - 4, height / 2, 8, 1 );
	}
"iconify" icon for {@link javax.swing.JInternalFrame}.

@author Karl Tauber
flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatInternalFrameIconifyIcon.java