title: Coherence exception for Unknow user type for JAVA API class
body: <p>After implemented annotation based POF Serialization in Coherence POC,
  I am getting following exception:</p>
  
  <pre><code>unknown user type: java.lang.Class
  </code></pre>
  
  <p>Whatever the classes I am using, I added those names inside my custom pof config file and also added inbuilt pof config.
  Still somehow I am getting above exception.
  Could you please explain these.
  Here one more doubt is, this class belongs to JAVA api, so how to add this type of class to custom pof config file.</p>
  
  <p>Stack trace: </p>
  
  <pre><code>Caused by: java.lang.IllegalArgumentException: unknown user type: java.lang.Class
      at com.tangosol.io.pof.ConfigurablePofContext.getUserTypeIdentifier(ConfigurablePofContext.java:438)
  </code></pre>
  
  <p>Thanks in advance.</p>