title: Automatic module name containing number
body: <p>I want to use Java 9 in my app. One of my dependencies has a jar name:</p>
  
  <pre><code>sdk-http-ahc-2_0
  </code></pre>
  
  <p>Unfortunately, when I try to change it to automatic module, the name for the module is not valid.</p>
  
  <pre><code>requires sdk.http.ahc.2_0; // not valid
  </code></pre>
  
  <p>Am I missing something with naming the module? What are my other options here?</p>