class_docstr: Helper function for downloading external dependency
  
  >>> from nlpaug.util.file.download import DownloadUtil
docstr: :param str dest_dir: Directory of saving file
  :return: Word2Vec C binary file named 'GoogleNews-vectors-negative300.bin'
  
  >>> DownloadUtil.download_word2vec('.')
docstr_tok: [":","param","str","dest_dir",":","Directory","of","saving","file",":","return",":","Word2Vec","C","binary","file","named","'GoogleNews-vectors-negative300.bin'",">",">",">","DownloadUtil.download_word2vec","(","'",".","'",")"]
code: def download_word2vec(dest_dir: str = "."):
      """
      :param str dest_dir: Directory of saving file
      :return: Word2Vec C binary file named 'GoogleNews-vectors-negative300.bin'
  
      >>> DownloadUtil.download_word2vec('.')
  
      """
      file_path = DownloadUtil.download_from_google_drive(
          url="https://drive.google.com/uc?export=download&id=0B7XkCwpI5KDYNlNUTTlSS21pQmM",
          dest_dir=dest_dir,
          dest_file="GoogleNews-vectors-negative300.bin.gz",
      )
      DownloadUtil.unzip(file_path, dest_dir=dest_dir)
  
file_path: nlpaug/nlpaug/util/file/download.py
imports: import gzip
  import os
  import shutil
  import tarfile
  import urllib
  import zipfile
  import gdown
  import requests
label_desc: Use image node_id 1 for calling the DownloadUtil obj's underlying member method code with example usage: obj.download_word2vec(dest_dir) without return types