code: def download_data(dest_dir):
      TINYSHAKESPEARE_URL = "https://raw.githubusercontent.com/karpathy/char-rnn/master/data/tinyshakespeare/input.txt"  # noqa
      file_name = "input.txt"
      file_abs_path = base.maybe_download(
          file_name, dest_dir, TINYSHAKESPEARE_URL
      )
      return file_abs_path
  
file_path: BigDL/python/dllib/src/bigdl/dllib/models/rnn/rnnexample.py
imports: import itertools
  import re
  from optparse import OptionParser
  from bigdl.dllib.feature.dataset import base
  from bigdl.dllib.feature.dataset import sentence
  from bigdl.dllib.nn.layer import *
  from bigdl.dllib.nn.criterion import *
  from bigdl.dllib.optim.optimizer import *
  from bigdl.dllib.utils.common import *
  from bigdl.dllib.utils.common import Sample
label_desc: Use image node_id 1 for calling a global function with example usage: download_data(dest_dir) and returns: file_abs_path