code: public static List<String> getRowStringValues(Row row) {
      return Lists.transform(Lists.newArrayList(row.getValues()), new Function<Value, String>() {
        public String apply(Value input) {
          return Pql.toString(input);
        }
      });
    }
docs: Gets the values in a row of the result set in the form of a string
  list.
  
  @param row the row to get the values for
  @return the string list of the row values