local_level=

# File activesupport/lib/active_support/logger_thread_safe_level.rb, line 22
    def local_level=(level)
      case level
      when Integer
      when Symbol
        level = Logger::Severity.const_get(level.to_s.upcase)
      when nil
      else
        raise ArgumentError, "Invalid log level: #{level.inspect}"
      end
      if level.nil?
        IsolatedExecutionState.delete(local_level_key)
      else
        IsolatedExecutionState[local_level_key] = level
      end
    end