title: PHP reserved keywords allowed in namespace? (public, private, default)
body: <p>PhpStorm is highlighting the following namespace as an error.</p>
  
  <pre><code>&lt;?php
  
  namespace App\Http\Controllers\Public;
  </code></pre>
  
  <p>Error: <code>Expected: identifier</code>  </p>
  
  <p>In general. Are reserved keywords like <code>public</code>, <code>function</code>, <code>class</code> not acceptable for namespacing?  </p>