level=

# File lib/logger.rb, line 266
  def level=(severity)
    if severity.is_a?(Integer)
      @level = severity
    else
      case severity.to_s.downcase
      when 'debug'
        @level = DEBUG
      when 'info'
        @level = INFO
      when 'warn'
        @level = WARN
      when 'error'
        @level = ERROR
      when 'fatal'
        @level = FATAL
      when 'unknown'
        @level = UNKNOWN
      else
        raise ArgumentError, "invalid log level: #{severity}"
      end
    end
  end