code: public static Pair<String,String> pair (final String s1, final String s2)
          {        
          if (StringUtils.isBlank(s1))
              {
              LOG.warn("Blank first arg");
              }
          if (StringUtils.isBlank(s2))
              {
              LOG.warn("Blank second arg for: "+s1);
              }
          return new PairImpl<String,String> (s1, s2);
          }
docs: Returns a pair of strings created from two strings.
  
  @param s1 The first string.
  @param s2 The second string.
  @return A pair of strings created from the two given strings.