code: def step_definition(step_name):
      
      if not orca.is_step(step_name):
          abort(404)
  
      filename, lineno, source = \
          orca.get_step(step_name).func_source_data()
      html = highlight(source, PythonLexer(), HtmlFormatter())
      return jsonify(filename=filename, lineno=lineno, text=source, html=html)
docs: Get the source of a step function. Returned object has keys
      "filename", "lineno", "text" and "html". "text" is the raw
      text of the function, "html" has been marked up by Pygments.