# File lib/capybara-screenshot/saver.rb, line 14
      def initialize(capybara, page, html_save=true, filename_prefix='screenshot')
        @capybara, @page, @html_save = capybara, page, html_save
        time_now = Time.now
        timestamp = "#{time_now.strftime('%Y-%m-%d-%H-%M-%S.')}#{'%03d' % (time_now.usec/1000).to_i}"

        filename = [filename_prefix]
        filename << timestamp if Capybara::Screenshot.append_timestamp
        filename << SecureRandom.hex if Capybara::Screenshot.append_random

        @file_base_name = filename.join('_')

        Capybara::Screenshot.prune
      end