    # File lib/yard/options.rb, line 187
        def reset_defaults
          names_set = {}
          self.class.ancestors.each do |klass| # look at all ancestors
            defaults = klass.instance_variable_get("@defaults")
            next unless defaults
            defaults.each do |key, value|
              next if names_set[key]
              names_set[key] = true
              self[key] = Proc === value ? value.call : value
            end
          end
        end