code: def is_matching(cls, file_path):
          
          if file_path.endswith(".ndata") and os.path.exists(file_path):
              try:
                  with open(file_path, "r+b") as fp:
                      local_files, dir_files, eocd = parse_zip(fp)
                      contains_data = b"data.npy" in dir_files
                      contains_metadata = b"metadata.json" in dir_files
                      file_count = contains_data + contains_metadata  # use fact that True is 1, False is 0
                      # TODO: make sure ndata isn't compressed, or handle it
                      if len(dir_files) != file_count or file_count == 0:
                          return False
                      return True
              except Exception as e:
                  logging.error("Exception parsing ndata file: %s", file_path)
                  logging.error(str(e))
          return False
docs: Return whether the given absolute file path is an ndata file.