code: def get_report_time(self):
          
          tree = get_xml(self.get_url(AwsConstants.REPORT))
  
          try:
              timestamp = tree.find('check/inspection').attrib['execution']
              return timestamp.split(',')[0].replace(' ', 'T').replace(':', '').replace('-', '')
          except AttributeError:
              warnings.warn('Could not obtain the L2A report creation time')
              return 'unknown'
docs: Returns time when the L2A processing started and reports was created.
          :return: String in a form YYYYMMDDTHHMMSS
          :rtype: str