 &lt;output message="tns:AddNumbersOutput" name="bar"
           &lt;b&gt;wsam:Action="http://example.com/numbers/AddNumbersPortType/AddNumbersResponse"&lt;/b&gt;/&gt;
       &lt;/operation&gt;
     &lt;/portType&gt;
     ...
   &lt;/definitions&gt;
 </code></pre>

 It is legitimate to specify an explicit value for <code>Action</code> message addressing property for
 <code>output</code> message only. In this case, <code>wsam:Action</code> value for the
 WSDL <code>input</code> message is computed using the 