How to use the certbot-nginx.certbot_nginx._internal.parser_obj.Sentence function in certbot-nginx

def _is_comment(parsed_obj):
    """ Checks whether parsed_obj is a comment.

    :param .Parsable parsed_obj:

    :returns: whether parsed_obj represents a comment sentence.
    :rtype bool:
    """
    if not isinstance(parsed_obj, Sentence):
        return False
    return parsed_obj.words[0] == "#"

def parse(self, raw_list, add_spaces=False):
        """ Parses a list that resembles a block.

        The assumptions that this routine makes are:
            1. the first element of `raw_list` is a valid Sentence.
            2. the second element of `raw_list` is a valid Statement.
        If add_spaces is set, we call it recursively on `names` and `contents`, and
        add an extra trailing space to `names` (to separate the block's opening bracket
        and the block name).
        """
        if not Block.should_parse(raw_list):
            raise errors.MisconfigurationError("Block parsing expects a list of length 2. "
                "First element should be a list of string types (the bloc names), "
                "and second should be another list of statements (the bloc content).")
        self.names = Sentence(self)
        if add_spaces:
            raw_list[0].append(" ")
        self.names.parse(raw_list[0], add_spaces)
        self.contents = Statements(self)
        self.contents.parse(raw_list[1], add_spaces)
        self._data = [self.names, self.contents]

def _certbot_comment(parent, preceding_spaces=4):
    """ A "Managed by Certbot" comment.
    :param int preceding_spaces: Number of spaces between the end of the previous
        statement and the comment.
    :returns: Sentence containing the comment.
    :rtype: .Sentence
    """
    result = Sentence(parent)
    result.parse([" " * preceding_spaces] + COMMENT_BLOCK)
    return result