# File lib/fog/compute/openstack/models/metadata.rb, line 15
        def all
          requires :parent
          metadata = service.list_metadata(collection_name, @parent.id).body['metadata']
          metas = []
          metadata.each_pair { |k, v| metas << {"key" => k, "value" => v} } unless metadata.nil?
          # TODO: convert to load_response?
          load(metas)
        end