How to use the mermaid/src/diagrams/flowchart/flowRenderer.setConf function in mermaid

const render = (elt) => {
  const svgId = `mermaid-svg-${utils.uid()}`;
  const txt = elt.textContent;
  containerElt.innerHTML = `<div class="mermaid"><svg id="${svgId}" xmlns="http://www.w3.org/2000/svg"><g></g></svg></div>`;

  try {
    const graphType = mermaidUtils.detectType(txt);
    switch (graphType) {
      case 'git':
        config.flowchart.arrowMarkerAbsolute = config.arrowMarkerAbsolute;
        gitGraphRenderer.setConf(config.git);
        gitGraphRenderer.draw(txt, svgId, false);
        break;
      case 'flowchart':
        config.flowchart.arrowMarkerAbsolute = config.arrowMarkerAbsolute;
        flowRenderer.setConf(config.flowchart);
        flowRenderer.draw(txt, svgId, false);
        break;
      case 'sequence':
        config.sequence.arrowMarkerAbsolute = config.arrowMarkerAbsolute;
        sequenceRenderer.setConf(config.sequence);
        sequenceRenderer.draw(txt, svgId);
        break;
      case 'gantt':
        config.gantt.arrowMarkerAbsolute = config.arrowMarkerAbsolute;
        ganttRenderer.setConf(config.gantt);
        ganttRenderer.draw(txt, svgId);
        break;
      case 'class':
        config.class.arrowMarkerAbsolute = config.arrowMarkerAbsolute;
        classRenderer.setConf(config.class);
        classRenderer.draw(txt, svgId);