class Kramdown::Converter::Html

def convert_standalone_image(el, indent)

element.
Helper method used by +convert_p+ to convert a paragraph that only contains a single :img 
def convert_standalone_image(el, indent)
  attr = el.attr.dup
  figure_attr = {}
  figure_attr['class'] = attr.delete('class') if attr.key?('class')
  figure_attr['id'] = attr.delete('id') if attr.key?('id')
  body = "#{' ' * (indent + @indent)}<img#{html_attributes(attr)} />\n" \
    "#{' ' * (indent + @indent)}<figcaption>#{attr['alt']}</figcaption>\n"
  format_as_indented_block_html("figure", figure_attr, body, indent)
end