title: Why is there an additional annotation (@org.jetbrains.annotations.Nullable) in newer versions of Android Studio?
body: <p>After upgrading from Android Studio version 4.1.3 to 4.2.1, I noticed an additional annotation is added where there's @Nullable annotation.</p>
  <pre><code>    @Override
      protected void onCreate(@Nullable @org.jetbrains.annotations.Nullable Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
      }
  </code></pre>
  <p>It seems redundant to me. What's the purpose of this additional annotation and is it really necessary to use it?</p>