# File lib/adhearsion/logging.rb, line 18
      def logging_level=(new_logging_level)
        new_logging_level = Log4r.const_get(new_logging_level.to_s.upcase)
        @@logging_level_lock.synchronize do
          @@logging_level = new_logging_level
          Log4r::Logger.each_logger do |logger|
            logger.level = new_logging_level
          end
        end
      end