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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _figure_data(self, plot, fmt='html', doc=None, as_script=False, **kwargs):
 """ Given a plot instance, an output format and an optional bokeh document, return the corresponding data. If as_script is True, the content will be split in an HTML and a JS component. """

        model = plot.state
        if doc is None:
            doc = plot.document
        else:
            plot.document = doc

        for m in model.references():
            m._document = None

        doc.theme = self.theme
        doc.add_root(model)

        # Bokeh raises warnings about duplicate tools and empty subplots
        # but at the holoviews level these are not issues
        logger = logging.getLogger(bokeh.core.validation.check.__file__)
        logger.disabled = True

        if fmt == 'png':
            from bokeh.io.export import get_screenshot_as_png
            img = get_screenshot_as_png(plot.state, None)
            imgByteArr = BytesIO()
            img.save(imgByteArr, format='PNG')
            data = imgByteArr.getvalue()
            if as_script:
                b64 = base64.b64encode(data).decode("utf-8")
                (mime_type, tag) = MIME_TYPES[fmt], HTML_TAGS[fmt]
                src = HTML_TAGS['base64'].format(mime_type=mime_type, b64=b64)
                div = tag.format(src=src, mime_type=mime_type, css='')
                js = ''
        else:
            try:
                with silence_warnings(EMPTY_LAYOUT, MISSING_RENDERERS):
                    js, div, _ = notebook_content(model)
                html = NOTEBOOK_DIV.format(plot_script=js, plot_div=div)
                data = encode_utf8(html)
                doc.hold()
            except:
                logger.disabled = False
                raise
            logger.disabled = False

        plot.document = doc
        if as_script:
            return div, js
        return data