render

# File actionmailer/lib/action_mailer/deprecated_api.rb, line 96
    def render(*args)
      options = args.last.is_a?(Hash) ? args.last : {}

      if file = options[:file] and !file.index("/")
        ActiveSupport::Deprecation.warn("render :file is deprecated except for absolute paths. "                                          "Please use render :template instead")
        options[:prefix] = _prefix
      end

      if options[:body].is_a?(Hash)
        ActiveSupport::Deprecation.warn(':body in render deprecated. Please use instance ' <<
                                        'variables as assigns instead', caller[0,1])

        options[:body].each { |k,v| instance_variable_set(:"@#{k}", v) }
      end
      super
    end