# File lib/mongo/index/view.rb, line 150
      def create_many(*models)
        server = next_primary
        client.send(:with_session, @options) do |session|
          spec = {
                  indexes: normalize_models(models.flatten, server),
                  db_name: database.name,
                  coll_name: collection.name,
                  session: session
                 }
          spec[:write_concern] = write_concern if server.features.collation_enabled?
          Operation::CreateIndex.new(spec).execute(server)
        end
      end