oxy. A service client
 uses this proxy to invoke operations on the target
 service endpoint. The <code>serviceEndpointInterface</code>
 specifies the service endpoint interface that is supported by
 the created dynamic proxy instance.</div>
<dl>
<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - Service endpoint interface</dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>portName</code> - Qualified name of the service endpoint in
                  the WSDL servi