title: Error in Name Space after migrating to JSF 2.2
body: <p>I am facing below issue, after I migrated to JSF2.2</p>
  
  <pre><code> com.sun.faces.config.ConfigurationException: The tag named passThroughAttribute from namespace http://xmlns.jcp.org/jsf/core has a null handler-class defined
      at com.sun.faces.config.processor.FaceletTaglibConfigProcessor.processHandlerClass(FaceletTaglibConfigProcessor.java:422) [:2.2.0]
      at com.sun.faces.config.processor.FaceletTaglibConfigProcessor.processTags(FaceletTaglibConfigProcessor.java:378) [:2.2.0]
      at com.sun.faces.config.processor.FaceletTaglibConfigProcessor.processTagLibrary(FaceletTaglibConfigProcessor.java:321) [:2.2.0]
      at com.sun.faces.config.processor.FaceletTaglibConfigProcessor.process(FaceletTaglibConfigProcessor.java:270) [:2.2.0]
      at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:437) [:2.2.0]
      at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:214) [:2.2.0]
  </code></pre>
  
  <p>I have made changes as per specifications as well I went through below url :
  <a href="http://jsfcorner.blogspot.in" rel="nofollow">http://jsfcorner.blogspot.in</a></p>
  
  <p>and My changes are like:</p>
  
  <pre><code>&lt;html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://xmlns.jcp.org/jsf/html"
      xmlns:f="http://xmlns.jcp.org/jsf/core"
      xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
      xmlns:p="http://primefaces.org/ui"&gt;
  </code></pre>
  
  <p>and including passthrough as well</p>
  
  <pre><code>&lt;html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://xmlns.jcp.org/jsf/html"
      xmlns:f="http://xmlns.jcp.org/jsf/core"
      xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
      xmlns:pt="http://xmlns.jcp.org/jsf/passthrough"
      xmlns:p="http://primefaces.org/ui"&gt;
  </code></pre>