normalize_options

# File activesupport/lib/active_support/messages/rotation_coordinator.rb, line 62
        def normalize_options(options)
          options = options.dup

          options[:secret_generator] ||= @secret_generator

          secret_generator_kwargs = options[:secret_generator].parameters.
            filter_map { |type, name| name if type == :key || type == :keyreq }
          options[:secret_generator_options] = options.extract!(*secret_generator_kwargs)

          options[:on_rotation] = @on_rotation

          options
        end