title: Cannot initialize module TreeWalker - Unable to instantiate SuppressWarningsHolder
body: <p>I have maven-checkstyle-plugin(v2.5) and maven-eclipse-plugin(v2.8) configured.</p>
  
  <p>Everything worked as expected but as soon as I introduced,</p>
  
  <p><em>module name="SuppressWarningsHolder"</em> <b>AND/OR</b> <em>module name="SuppressWarningsFilter"</em> <br><br>to my checkstyle-config.xml, I started to have problems building the project.</p>
  
  <p>Here is what I get:</p>
  
  <pre><code>[ERROR] BUILD ERROR
  1&gt;  [INFO] ------------------------------------------------------------------------
  1&gt;  [INFO] Failed during checkstyle configuration
  1&gt;  
  1&gt;EXEC : Embedded error : cannot initialize module TreeWalker - Unable to instantiate SuppressWarningsHolder
  1&gt;  Unable to instantiate SuppressWarningsHolderCheck
  </code></pre>
  
  <p>If I remove SuppressWarningsHolderCheck, I get the same error for SuppressWarningsFilter.</p>
  
  <p>Any ideas?</p>
  
  <p>Thanks</p>