gistfile1.txt

if provider
  # Verify that the given provider matches what the box has.
  if box_provider.to_sym != provider
    @logger.error("Added box provider doesnt match expected: #{box_provider}")
    raise Errors::BoxProviderDoesntMatch, :expected => provider, :actual => box_provider
  end
else
  # We weren't given a provider, so store this one.
  provider = box_provider.to_sym

  # Verify the box doesn't already exist
  check_box_exists.call(provider)
end