def rails_logger
      if instance_variable_defined?(k = :@rails_logger)
        instance_variable_get(k)
      else
        instance_variable_set(k, conf.rails && conf.rails.logger)
      end
    end
def rails_logger
      if instance_variable_defined?(k = :@rails_logger)
        instance_variable_get(k)
      else
        instance_variable_set(k, conf.rails && conf.rails.logger)
      end
    end
An object to use as log in Rails mode.
 @return [ActiveSupport::Logger] Default is <tt>conf.rails.logger</tt>.