title: how to ignore some fields when using BeanCopier to copy properties
body: <p>Now I want to copy fields from A class to B class, my code like this:</p>
  <pre><code>private static final &lt;S, D&gt; D doCopy(S src, D dest, Converter converter) {
      Class&lt;?&gt; clsSrc = src.getClass();
      Class&lt;?&gt; clsDest = dest.getClass();
      BeanCopier copier = getBeanCopier(clsSrc, clsDest);
      copier.copy(src, dest, converter);
      return dest;
  }
  </code></pre>
  <p>because some fields of A class fields type not match B class, if I copied directly. It will throw some error, is it possible to ignore some fields when doing copy? I read the BeanCopier source code and did not find any way?</p>