title: Custom type converter for Mojo configuration?
body: <p>I need to use custom type, e.g., <code>LunarDate</code>, in my Mojo object:</p>
  
  <pre><code>class MyMojo extends AbstractMojo {
  
      /** @parameter */
      LunarDate lunarDate;
  
  }
  </code></pre>
  
  <p>And I want to configure the parameter in <code>&lt;configuration&gt;</code> section in pom.xml.</p>
  
  <pre><code>&lt;configuration&gt;
       &lt;lunarDate&gt;丁丑年二月初四&lt;/lunarDate&gt;
  &lt;/configuration&gt;
  </code></pre>
  
  <p>(The type <code>LunarDate</code> is just an example to illustrate the question)</p>
  
  <p>I've already had the type converters, but how to enable them?</p>