How to use the certbot-apache.certbot_apache._internal.interfaces.ParserNode function in certbot-apache

to ensure that the Reverter checkpoints are created properly.

        Note: this approach of keeping internal structure of the configuration
        within the ParserNode tree does not represent the file inclusion structure
        of actual configuration files that reside in the filesystem. To handle
        file writes properly, the file specific temporary trees should be extracted
        from the full ParserNode tree where necessary when writing to disk.

        :param str msg: Message describing the reason for the save.

        """


# Linter rule exclusion done because of https://github.com/PyCQA/pylint/issues/179
@six.add_metaclass(abc.ABCMeta)  # pylint: disable=abstract-method
class CommentNode(ParserNode):
    """
    CommentNode class is used for representation of comments within the parsed
    configuration structure. Because of the nature of comments, it is not able
    to have child nodes and hence it is always treated as a leaf node.

    CommentNode stores its contents in class variable 'comment' and does not
    have a specific name.

    CommentNode objects should have the following attributes in addition to
    the ones described in ParserNode:

    # Contains the contents of the comment without the directive notation
    # (typically # or /* ... */).
    comment: str

    """

:param filepath: Filesystem path for the file where this CommentNode
            does or should exist in the filesystem. Required.
        :type filepath: str or None

        :param dirty: Boolean flag for denoting if this CommentNode has been
            created or changed after the last save. Default: False.
        :type dirty: bool
        """
        super(CommentNode, self).__init__(ancestor=kwargs['ancestor'],
                                          dirty=kwargs.get('dirty', False),
                                          filepath=kwargs['filepath'],
                                          metadata=kwargs.get('metadata', {}))  # pragma: no cover


@six.add_metaclass(abc.ABCMeta)
class DirectiveNode(ParserNode):
    """
    DirectiveNode class represents a configuration directive within the configuration.
    It can have zero or more parameters attached to it. Because of the nature of
    single directives, it is not able to have child nodes and hence it is always
    treated as a leaf node.

    If a this directive was defined on the httpd command line, the ancestor instance
    variable for this DirectiveNode should be None, and it should be inserted to the
    beginning of root BlockNode children sequence.

    DirectiveNode objects should have the following attributes in addition to
    the ones described in ParserNode:

    # True if this DirectiveNode is enabled and False if it is inside of an
    # inactive conditional block.
    enabled: bool