code: def from_file_path(cls, path_prefix):
          
          with cls._path_prefix_to_files(path_prefix, 'r') as (array_file, vocab_file):
              return cls.from_files(array_file, vocab_file)
docs: Load the embedding matrix and the vocab from <path_prefix>.npy and <path_prefix>.vocab.
  
          :param (str) path_prefix: path prefix of the saved files