def aggregate(parsed_files)
      agr = Aggregator.new
      parsed_files.each do |file|
        Logger.log("Aggregating", file.filename)
        agr.aggregate(file)
      end
      agr.result
    end
def aggregate(parsed_files)
      agr = Aggregator.new
      parsed_files.each do |file|
        Logger.log("Aggregating", file.filename)
        agr.aggregate(file)
      end
      agr.result
    end
Aggregates parsing results sequencially