IconBorder.NO_ICONS=No icons may be null.
IconBorder.NORTHERN_ICON=Northern icon borderHeights inconsistent
IconBorder.SOUTHERN_ICON=Southern icon borderHeights inconsistent
IconBorder.WESTERN_ICON=Western icon borderWidths inconsistent
IconBorder.EASTERN_ICON=Eastern icon borderWidths inconsistent
RoundedTitleBorder.ILLEGAL_ARGUMENT=Arc height must be >= 0: 
RoundBorderWithHeader.ILLEGAL_ARGUMENT=Arc height must be >= 0: 
