def symbolized_options(*keys) # :nodoc:
      @symbolized_options ||= begin
        opts = {}.merge(options)
        opts.merge! saved_options if saved_options?
        opts.symbolize_keys
      end
      @symbolized_options.slice(*keys)
    end
def symbolized_options(*keys) # :nodoc:
      @symbolized_options ||= begin
        opts = {}.merge(options)
        opts.merge! saved_options if saved_options?
        opts.symbolize_keys
      end
      @symbolized_options.slice(*keys)
    end
Returns a mutable options hash with symbolized keys.
 Optionally, returns only the keys given.