title: Create instance of unmanaged dll class
body: <p>How do I create a class that I can reference to and directly use to call methods from an unmanaged dll? (assuming an unmanaged dll is a dll that doesn't exists/is known @ compile time)</p>
  
  <p>For example I have a dll which contains the class helloWorld and I want to create an instance of the class and then call helloWorld.tell().</p>