def write_experiment_file(combination, new_content)
      filename = experimental_filename(combination)
      File.open(filename, 'w+') { |f| f.puts new_content }
      filename
    end
def write_experiment_file(combination, new_content)
      filename = experimental_filename(combination)
      File.open(filename, 'w+') { |f| f.puts new_content }
      filename
    end
rubocop:enable Metrics/AbcSize
 rubocop:enable Metrics/MethodLength
 Write new file name depending on the combination
 @param [Array<Integer>] combination
 @param [String] new_content to be persisted