module FFaker::Avatar

def image(slug = nil, size = '300x300', format = 'png', bgset = nil)
  check_passed_params(size, format, bgset)
  slug ||= FFaker::Lorem.words.join
  "https://robohash.org/#{slug}.#{format}?size=#{size}#{'&bgset=bg' + bgset.to_s if bgset}"
end