code: def parse(self):
      
      file_status = True
      for infile in self.infile_list:
        file_status = file_status and naarad.utils.is_valid_file(infile)
        if not file_status:
          return False
  
      status = self.parse_xml_jtl(self.aggregation_granularity)
      gc.collect()
      return status
docs: Parse the Jmeter file and calculate key stats
  
      :return: status of the metric parse