title: module 'tensorflow_datasets.core.features' has no attribute 'text'
body: <p>Good day everyone, I am developing a Sentiment Analysis using Tensorflow, using some reviews based on electronics on Amazon. In the code, I encountered an error. I used tensorflow datasets to retrieve some texts, but however was unable to.
  Here is part of the code, containing the error below:</p>
  <pre><code>tokenizer = tfds.features.text.Tokenizer()
  
  vocabulary_set = set()
  for _, reviews in train_dataset.enumerate():
  review_text = reviews['data']
  reviews_tokens = tokenizer.tokenize(review_text.get('review_body').numpy())
  vocabulary_set.update(reviews_tokens)
  vocab_size = len(vocabulary_set)
  vocab_size
  </code></pre>
  <p>The error I got from here is an attribute error</p>
  <pre><code>AttributeError                            Traceback (most recent call last)
  &lt;ipython-input-17-1c32dce13853&gt; in &lt;module&gt;()
  ----&gt; 1 tokenizer = tfds.features.text.Tokenizer()
  AttributeError: module 'tensorflow_datasets.core.features' has no attribute 'text'
  </code></pre>
  <p>Please how can I resolve this error? Thank you</p>