code: def get_beam_cache_directory():
      
      home = os.path.expanduser("~")
      cache_dir = os.path.join(home, '.hwrt-beam-cache')
      if not os.path.exists(cache_dir):
          os.makedirs(cache_dir)
      return cache_dir
docs: Get a directory where pickled Beam Data can be stored.
  
      Create that directory, if it doesn't exist.
  
      Returns
      -------
      str
          Path to the directory