class_docstr: A flow to help you build your favorite movie playlist.
  
  The flow performs the following steps:
  1) Ingests a CSV file containing metadata about movies.
  2) Loads two of the columns from the CSV into python lists.
  3) In parallel branches:
     - A) Filters movies by the genre parameter.
     - B) Choose a random movie from a different genre.
  4) Displays the top entries from the playlist.
docstr: Join our parallel branches and merge results.
code: def join(self, inputs):
      """
      Join our parallel branches and merge results.
  
      """
      # Reassign relevant variables from our branches.
      self.playlist = inputs.genre_movies.movies
      self.bonus = inputs.bonus_movie.bonus
  
      self.next(self.end)
  
file_path: metaflow/metaflow/tutorials/01-playlist/playlist.py
imports: from metaflow import FlowSpec, step, IncludeFile, Parameter
label_desc: Use image node_id 4 for calling the PlayListFlow obj's underlying member method code with example usage: obj.join(inputs) without return types