TH like structure</a> holding the
  classpath to use when loading the compiler implementation if a
  custom class has been specified.  Doesn't have any effect when
  using one of the built-in compilers.</p>

<h4>Any nested element of a type that implements RmicAdapter
  <em>since Ant 1.8.0</em></h4>

<p>If a defined type implements the <code>RmicAdapter</code>
  interface a nested element of that type can be used as an
  alternative to the <code>compiler</code> attribute.</p>

<h3>Examples</h3>
<pre>  &lt;r