def to_s
      message = ''
      @messages.keys.sort.each do |timestamp|
        message << "#{Time.at(timestamp / 1000)}"
        message << " #{@messages[timestamp]['severity']}: #{@messages[timestamp]['user']}:"
        message << " #{@messages[timestamp]['short-description']}"
        unless @messages[timestamp]['short-description'].eql?(@messages[timestamp]['long-description'])
          message << "; #{@messages[timestamp]['long-description']}"
        end
        message << "\n"
      end
      message
    end
def to_s
      message = ''
      @messages.keys.sort.each do |timestamp|
        message << "#{Time.at(timestamp / 1000)}"
        message << " #{@messages[timestamp]['severity']}: #{@messages[timestamp]['user']}:"
        message << " #{@messages[timestamp]['short-description']}"
        unless @messages[timestamp]['short-description'].eql?(@messages[timestamp]['long-description'])
          message << "; #{@messages[timestamp]['long-description']}"
        end
        message << "\n"
      end
      message
    end
Create an execution log object
 @param [String] log_json JSON document as string
 @return [VcoWorkflows::WorkflowExecutionLog]
 rubocop:disable MethodLength, LineLength
 Stringify the log
 @return [String]