download

# File activestorage/lib/active_storage/service/disk_service.rb, line 25
    def download(key)
      if block_given?
        instrument :streaming_download, key: key do
          File.open(path_for(key), "rb") do |file|
            while data = file.read(5.megabytes)
              yield data
            end
          end
        end
      else
        instrument :download, key: key do
          File.binread path_for(key)
        end
      end
    end