new

# File activesupport/lib/active_support/messages/codec.rb, line 15
      def initialize(**options)
        @serializer = options[:serializer] || self.class.default_serializer
        @serializer = SerializerWithFallback[@serializer] if @serializer.is_a?(Symbol)
        @url_safe = options[:url_safe]
        @force_legacy_metadata_serializer = options[:force_legacy_metadata_serializer]
      end