add_new_serializers

# File activejob/lib/active_job/serializers.rb, line 66
        def add_new_serializers(new_serializers)
          new_serializers.map! do |s|
            if s.is_a?(Class) && s < ObjectSerializer
              s.instance
            else
              s
            end
          end

          @serializers += new_serializers
          index_serializers(new_serializers)
          @serializers
        end