destroy

# File actionpack/lib/action_dispatch/middleware/session/abstract_store.rb, line 13
      def destroy
        clear
        options = @env[Rack::Session::Abstract::ENV_SESSION_OPTIONS_KEY] if @env
        options ||= {}
        @by.send(:destroy_session, @env, options[:id], options) if @by
        options[:id] = nil
        @loaded = false
      end