title: How to call an extension method without using
body: <pre><code>using System;
  
  class Runner
  {
      static void Main()
      {
          A a = new A();
          // how to say a.PrintStuff() without a 'using'
          Console.Read();
      }
  }
  
  class A { }
  
  namespace ExtensionMethod
  {
      static class AExtensions
      {
          public static void PrintStuff(this A a)
          {
              Console.WriteLine("text");
          }
      }
  }
  </code></pre>
  
  <p>How would I call the extension method without a 'using'? And not ExtensionMethod.AExtensions.PrintStuff(a), since that doesn't make use of extension method.</p>