# File lib/dragonfly/configurable.rb, line 180
      def method_missing(method_name, *args, &block)
        if owner.has_config_method?(method_name)
          attribute = method_name.to_s.tr('=','').to_sym
          if method_name.to_s =~ /=$/ && owner.has_config_method?(attribute) # a bit hacky - if it has both getter and setter, assume it's a configurable_attr
            owner.set_config_value(attribute, args.first)
          else
            owner.send(method_name, *args, &block)
          end
        elsif nested_configurable?(method_name)
          owner.send(method_name)
        else
          raise BadConfigAttribute, "You tried to configure using '#{method_name.inspect}',  but the valid config attributes are #{owner.config_methods.map{|a| %('#{a.inspect}') }.sort.join(', ')}"
        end
      end