# File lib/fog/atmos/models/storage/files.rb, line 52
        def head(key, options = {})
          requires :directory
          data = service.head_namespace(directory.key + key, :parse => false)
          file_data = data.headers.merge({
            :body => data.body,
            :key => key
          })
          new(file_data)
        rescue Fog::Storage::Atmos::NotFound
          nil
        end