def level=(level)
      level = case level
              when Symbol
                level
              else
                STANDARD_TO_SYMBOL[level] || :info
              end

      @configuration.level level
    end
def level=(level)
      level = case level
              when Symbol
                level
              else
                STANDARD_TO_SYMBOL[level] || :info
              end

      @configuration.level level
    end
Public: Set the lowest level of message to log by default.

 level - The lowest level of message to log by default.

 The use of this method is not recommended as it affects the performance of
 the logging. It is only provided for compatibility.

 Returns nothing.