# File lib/fog/volume/openstack/v1/models/snapshot.rb, line 17
          def save
            requires :display_name
            data = if id.nil?
                     service.create_snapshot(attributes[:volume_id], display_name, display_description, force)
                   else
                     service.update_snapshot(id, attributes.reject { |k, _v| k == :id })
                   end
            merge_attributes(data.body['snapshot'])
            true
          end