How to use the pycaption.base.CaptionNode.create_break function in pycaption

def _translate_break(self, caption):
        # if break appears at start of caption, skip break
        if self.first_element == True:
            return
        # if the last caption was a break, skip this break
        elif caption.nodes[-1].type == CaptionNode.BREAK:
            return
        # close any open italics
        elif self.open_italic == True:
            caption.nodes.append(CaptionNode.create_style(False, {'italics': True}))
            self.open_italic = False

        # add line break
        caption.nodes.append(CaptionNode.create_break())

def merge(captions):
    """
    Merge list of captions into one caption. The start/end times from the first
    caption are kept.
    """
    new_nodes = []
    for caption in captions:
        if new_nodes:
            new_nodes.append(CaptionNode.create_break())
        for node in caption.nodes:
            new_nodes.append(node)
    caption = Caption(
        captions[0].start, captions[0].end, new_nodes, captions[0].style)
    return caption

self._still_editing = [caption]

        for instruction in node_buffer:
            # skip empty elements
            if instruction.is_empty():
                continue

            elif instruction.requires_repositioning():
                caption = PreCaption()
                caption.start = start
                caption.end = 0
                self._still_editing.append(caption)

            # handle line breaks
            elif instruction.is_explicit_break():
                caption.nodes.append(CaptionNode.create_break(
                    layout_info=_get_layout_from_tuple(instruction.position)
                ))

            # handle open italics
            elif instruction.sets_italics_on():
                caption.nodes.append(
                    CaptionNode.create_style(
                        True, {'italics': True},
                        layout_info=_get_layout_from_tuple(
                            instruction.position
                        ))
                )

            # handle clone italics
            elif instruction.sets_italics_off():
                caption.nodes.append(

"""
        # convert text
        if isinstance(tag, NavigableString):
            # BeautifulSoup apparently handles unescaping character codes
            # (e.g. &) automatically. The following variable, therefore,
            # should contain a plain unicode string.
            # strips indentation whitespace only
            pattern = re.compile("^(?:[\n\r]+\s*)?(.+)")
            result = pattern.search(tag)
            if not result:
                return
            tag_text = result.groups()[0]
            self.line.append(CaptionNode.create_text(tag_text, inherit_from))
        # convert line breaks
        elif tag.name == 'br':
            self.line.append(CaptionNode.create_break(inherit_from))
        # convert italics, bold, and underline
        elif tag.name == 'i' or tag.name == 'b' or tag.name == 'u':
            style_name = self._get_style_name_from_tag(tag.name)
            self.line.append(
                CaptionNode.create_style(True, {style_name: True})
            )
            # recursively call function for any children elements
            for a in tag.contents:
                self._translate_tag(a, inherit_from)
            self.line.append(
                CaptionNode.create_style(False, {style_name: True}))
        elif tag.name == 'span':
            self._translate_span(tag, inherit_from)
        else:
            # recursively call function for any children elements
            for a in tag.contents:

elif '' == line:
                if found_timing:
                    if not nodes:
                        raise CaptionReadSyntaxError(
                            'Cue without content. (line %d)' % timing_line)
                    else:
                        found_timing = False
                        caption = Caption(
                            start, end, nodes, layout_info=layout_info)
                        captions.append(caption)
                        nodes = []
            else:
                if found_timing:
                    if nodes:
                        nodes.append(CaptionNode.create_break())
                    nodes.append(CaptionNode.create_text(
                        self._decode(line)))
                else:
                    # it's a comment or some metadata; ignore it
                    pass

        # Add a last caption if there are remaining nodes
        if nodes:
            caption = Caption(start, end, nodes, layout_info=layout_info)
            captions.append(caption)

        return captions