placement class 
 file.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>loader</code> - the defining loader of the class to be 
        transformed, may be null if the bootstrap loader</dd>
<dd><code>className</code> - the name of the class in the internal form 
        of fully qualified class and interface names</dd>
<dd><code>classBeingRedefined</code> - if this is a redefine, the 
        class being redefined, otherwise null</dd>
<dd><code>protectionDomain</code> - the protect