title: Conditional method depending on class attribute
body: <p>I'm wondering if a conditional method can have his condition on a class attribute.</p>
  
  <p>For instance :</p>
  
  <pre><code>class Class1 
  {
     public bool _doStuff;
  
     [Conditional(_doStuff)]
     public static void Stuff() {
        // Do the stuff
     }
  }
  </code></pre>
  
  <p>Like the <code>[Conditonal("DEBUG")]</code>. </p>
  
  <p>Does anyone know about this?</p>