def METHOD_NAME(self, file_path_list) -> str:
    hash_md5 = hashlib.md5()
    for file_path in file_path_list:
        with open(file_path, "rb") as image:
            for chunk in iter(lambda: image.read(4096), b""):
                hash_md5.update(chunk)
    return hash_md5.hexdigest()