How to use the pydriller.domain.commit.ModificationType.DELETE function in PyDriller

def test_modification_status():
    gr = GitRepository('test-repos/git-1/')
    commit = gr.get_commit('866e997a9e44cb4ddd9e00efe49361420aff2559')
    assert commit.modifications[0].change_type == ModificationType.ADD
    assert commit.modifications[0].old_path is None

    commit = gr.get_commit('57dbd017d1a744b949e7ca0b1c1a3b3dd4c1cbc1')
    assert commit.modifications[0].change_type == ModificationType.MODIFY
    assert commit.modifications[0].new_path == commit.modifications[0].old_path

    commit = gr.get_commit('ffccf1e7497eb8136fd66ed5e42bef29677c4b71')
    assert commit.modifications[0].change_type == ModificationType.DELETE
    assert commit.modifications[0].new_path is None

def _calculate_last_commits(self, commit: Commit,
                                modifications: List[Modification],
                                hashes_to_ignore_path: str = None) \
            -> Dict[str, Set[str]]:

        commits = {}

        for mod in modifications:
            path = mod.new_path
            if mod.change_type == ModificationType.RENAME or \
                    mod.change_type == ModificationType.DELETE:
                path = mod.old_path
            deleted_lines = self.parse_diff(mod.diff)['deleted']
            try:
                blame = self._get_blame(commit.hash, path,
                                        hashes_to_ignore_path)
                for num_line, line in deleted_lines:
                    if not self._useless_line(line.strip()):
                        buggy_commit = blame[num_line - 1].split(' ')[
                            0].replace('^', '')

                        # Skip unblamable lines.
                        if buggy_commit.startswith("*"):
                            continue

                        if mod.change_type == ModificationType.RENAME:
                            path = mod.new_path

def _from_change_to_modification_type(diff: Diff):
        if diff.new_file:
            return ModificationType.ADD
        if diff.deleted_file:
            return ModificationType.DELETE
        if diff.renamed_file:
            return ModificationType.RENAME
        if diff.a_blob and diff.b_blob and diff.a_blob != diff.b_blob:
            return ModificationType.MODIFY

        return ModificationType.UNKNOWN