# File lib/capybara/poltergeist/inspector.rb, line 25
    def open
      if browser
        Spawn.spawn(browser, url)
      else
        raise Error, "Could not find a browser executable to open #{url}. " \
                     "You can specify one manually using e.g. `:inspector => 'chromium'` " \
                     "as a configuration option for Poltergeist."
      end
    end