code: def load_captcha(options)
        if options[:raw64]
          options[:raw64]
        elsif options[:raw]
          Base64.encode64(options[:raw])
        elsif options[:file]
          Base64.encode64(options[:file].read)
        elsif options[:path]
          Base64.encode64(File.open(options[:path], 'rb').read)
        elsif options[:url]
          Base64.encode64(TwoCaptcha::HTTP.open_url(options[:url]))
        else
          fail TwoCaptcha::ArgumentError, 'Illegal image format'
        end
      rescue
        raise TwoCaptcha::InvalidCaptcha
      end
docs: Load a captcha raw content encoded in base64 from options.
  
   @param [Hash] options Options hash.
   @option options [String]  :url   URL of the image to be decoded.
   @option options [String]  :path  File path of the image to be decoded.
   @option options [File]    :file  File instance with image to be decoded.
   @option options [String]  :raw   Binary content of the image to bedecoded.
   @option options [String]  :raw64 Binary content encoded in base64 of the
                                    image to be decoded.
  
   @return [String] The binary image base64 encoded.