def METHOD_NAME(self):
    local_path = download_dataset(remote_path="mearec/mearec_test_10s.h5")
    self._rec = se.MEArecRecordingExtractor(local_path)
    self._sorting = se.MEArecSortingExtractor(local_path)
    self.num_units = len(self._sorting.get_unit_ids())
    #  self._we = extract_waveforms(self._rec, self._sorting, './toy_example', load_if_exists=True)
    if (cache_folder / "mearec_test").is_dir():
        self._we = load_waveforms(cache_folder / "mearec_test")
    else:
        self._we = extract_waveforms(self._rec, self._sorting, cache_folder / "mearec_test")
    self._amplitudes = compute_spike_amplitudes(self._we, peak_sign="neg", outputs="by_unit")
    self._gt_comp = sc.compare_sorter_to_ground_truth(self._sorting, self._sorting)