code: public String getNDelimitedStrings(int n)
      {
          return IntStream.range(0, config.getColsPerRow()).mapToObj(i -> "'" + dataGenerator.getRandomValue() + "'").collect(Collectors.joining(","));
      }
docs: Assumes delimiter to be comma since that covers all the usecase for now.
  Will parameterize if use cases differ on delimiter.
  @param n
  @return