et the value of the tuple element to which the
 specified alias has been assigned.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>alias</code> - alias assigned to tuple element</dd>
<dd><code>type</code> - of the tuple element</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>value of the tuple element</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.lang.IllegalArgumentException</code> - if alias
         does not correspond to an element in the
   