public static Insets addInsets( Insets insets1, Insets insets2 ) {
		if( insets1 == null )
			return insets2;
		if( insets2 == null )
			return insets1;

		return new Insets(
			insets1.top + insets2.top,
			insets1.left + insets2.left,
			insets1.bottom + insets2.bottom,
			insets1.right + insets2.right );
	}
Utility methods for UI delegates.

@author Karl Tauber
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java