# File lib/deltacloud/drivers/mock/mock_driver.rb, line 416
  def blob_data(credentials, bucket_id, blob_id, opts = {})
    check_credentials(credentials)
    blob=nil
    safely do
      blobfile = File::join("#{@storage_root}", "buckets", "blobs", "#{opts['blob']}.yml")
      blob = YAML.load_file(blobfile)
    end
    blob[:content].each {|part| yield part}
  end