code: def _load_reports(self, report_files):
          
          contents = []
          for file_handle in report_files:
              # Convert to unicode, replacing unreadable chars
              contents.append(
                  file_handle.read().decode(
                      'utf-8',
                      'replace'
                  )
              )
          return contents
docs: Args:
              report_files: list[file] reports to read in