title: Is it possible to remove all items from AsyncStorage
body: <p>I'm testing my React-Native application and want to remove all items from AsyncStorage in order to test the app from the beginning. And I am a bit confused.</p>
  
  <p>I read the official documentation and found <code>multiRemove</code> and <code>clear</code> functions, but I cannot understand how to clear all items of my application (<code>clear</code> as far as I understood clear the whole storage of all applications and I'm afraid to use it),
  and <code>multiRemove</code> delete only keys that I give it in parameters, but I want to clear <strong>all</strong> keys.</p>
  
  <p>I suppose I can do it through <code>getAllKeys</code> keys-values and remove it one-by-one, but maybe there is a more clear way to do it? :)</p>
  
  <p>thanks</p>
  
  <p>P.S: I tried to to like this: </p>
  
  <pre><code>clearAllData() {
      AsyncStorage.multiRemove([]).then(() =&gt; alert('success'));
  }
  </code></pre>
  
  <p>but it doesn't work...</p>