code: private static String getSize(IResponsiveLabel r, Sizes size) {
  		String colSize = "-1";
  		switch(size) {
  		case xs:
  			colSize = r.getLabelColXs();
  			if(colSize.equals("-1")) colSize = r.getLabelTinyScreen();
  			break;
  		case sm:
  			colSize = r.getLabelColSm();
  			if(colSize.equals("-1")) colSize = r.getLabelSmallScreen();
  			break;
  		case md:
  			colSize = r.getLabelColMd();
  			if(colSize.equals("-1")) colSize = r.getLabelMediumScreen();
  			break;
  		case lg:
  			colSize = r.getLabelColLg();
  			if(colSize.equals("-1")) colSize = r.getLabelLargeScreen();
  			break;
  		}
  		return colSize;
  	}
docs: Decode col sizes between two way of definition
  @param col
  @param size
  @return