# File lib/aws/option_grammar.rb, line 438
      def validate(options)
        options.each do |name, value|
          name = name.to_s
          raise ArgumentError.new("unexpected option #{name}") unless
            option(name)
          option(name).validate(value)
        end
        supported_options.each do |option|
          raise ArgumentError.new("missing required option #{option.ruby_name}") unless
            !option.required? ||
            options.has_key?(option.ruby_name) || options.has_key?(option.ruby_name.to_sym)
        end
      end