code: def serialize_math(ctx, document, elem, root):
      
  
      _div = etree.SubElement(root, 'span')
      if ctx.options['embed_styles']:
          _div.set('style', 'border: 1px solid red')
      _div.text = 'We do not support Math blocks at the moment.'
  
      fire_hooks(ctx, document, elem, _div, ctx.get_hook('math'))
  
      return root
docs: Serialize math element.
  
      Math objects are not supported at the moment. This is wht we only show error message.