/a>, the implementation of this
 method must wrap the argument <code>action</code> in a class that implements
 <a href="../../../javax/el/MethodExpression.html" title="class in javax.el"><code>MethodExpression</code></a> and call through to
 <a href="../../../javax/faces/component/ActionSource2.html#setActionExpression-javax.el.MethodExpression-"><code>ActionSource2.setActionExpression(javax.el.MethodExpression)</code></a>, passing the wrapped <code>action</code>.
 </p>

 <p>
 If the implementing class does