docs: def scan_to_graph(python_modules, graph, ignore=tuple()):
      """
      Scans `python_modules` with :py:func:`scan` and registers found providers
      in `graph`.
  
      `ignore` argument is passed through to :py:func:`scan`.
      """
      def callback(specification, provider):
          graph.register_provider(specification, provider)
      scan(python_modules, callback, ignore=ignore)