title: Call a method of type parameter
body: <p>Is there any way to do code such this:</p>
  
  <pre><code>class GenericClass&lt;T&gt;
  {
      void functionA()
      {
          T.A();
      }
  }
  </code></pre>
  
  <p>Or, how to call a function of type parameter (type is some my custom class).</p>