title: When to use GWT ensureInjected()?
body: <p>I created a few styles into a CSSResource and it works well whether I use </p>
  
  <pre><code>GWT.&lt;MyResources&gt;create(MyResources.class).myStyles().ensureInjected();
  </code></pre>
  
  <p>or not.</p>
  
  <p>Could anyone shed a light on this and explain when to use ensureInjected or not?</p>
  
  <p>Thank you!
  Daniel</p>