title: How do I get the base elements attribute in a Geb module
body: <p>Given the HTML:
      fooLink</p>
  
  <p>and the page object</p>
  
  <pre><code>class FooPage extend geb.Page {
      static content = {
          foo = { Module FooModule, $('.foo') }
      }
  }
  </code></pre>
  
  <p>What is the correct implementation to get the @href element out of the module?</p>
  
  <pre><code>class FooModule extends geb.module {
      static content = { 
          smartField = { doSomethingSmartWith(?.@href) }
      }
  }
  </code></pre>
  
  <p>I've tried, this, delegate, base, $ and @, none of them work.</p>