docs: def dispatch(environ):
      '''
      Do any path/method dispatching here and return a JSON-serializable data
      structure appropriate for the response
      '''
      method = environ['REQUEST_METHOD'].upper()
  
      if method == 'GET':
          return ("They found me. I don't know how, but they found me. "
                  "Run for it, Marty!")
      elif method == 'POST':
          data = get_json(environ)
          return run_chunk(environ, data)
      else:
          raise HTTPError(405, 'Method Not Allowed')