def METHOD_NAME(file_path, user=None):
    if is_google_bucket_file_path(file_path):
        process = _run_gsutil_command('ls', file_path, user=user)
        success = process.wait() == 0
        if not success:
            errors = [line.decode('utf-8').strip() for line in process.stdout]
            logger.info(' '.join(errors), user)
        return success
    return os.path.isfile(file_path)