@Override
	public Rectangle getFieldBounds(int index) {
		int offset = 0;
		for (int i = 0; i < layouts.length; i++) {
			if (index < offsets[i + 1]) {
				Rectangle rect = layouts[i].getFieldBounds(index - offsets[i]);
				rect.y += offset;
				return rect;
			}
			offset += layouts[i].getHeight();
		}
		return null;

	}
Returns the row containing the given FieldLocation.
Ghidra/Framework/Docking/src/main/java/docking/widgets/fieldpanel/support/MultiRowLayout.java