be returned.
 Likewise, if the map contains an initialization parameter with a <tt>null</tt> name or value, no updates will be
 performed, and an IllegalArgumentException will be thrown.

 <p>
 The returned set is not backed by the <code>Registration</code> object, so changes in the returned set are not reflected
 in the <code>Registration</code> object, and vice-versa.
 </p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>initParameters</code> - the initialization parameters</dd>
