title: Restrict f:validator on a specific submit button alone
body: <p>I'm having a JSF form in which I have a textarea and multiple buttons.
  For the text area I'm doing validation using f:validator</p>
  
  <pre><code>&lt;f:validator validatorId="myValidator" /&gt;
  &lt;a4j:support event="onsubmit" ajaxSingle="true" process="textarea1" /&gt;
  </code></pre>
  
  <p>The validator is working as expected. Now i have multiple submit buttons on the page i want the validation to happen on specific button only and validator should be ignored on the remaining buttons.</p>
  
  <p>Is there anyway to restrict the validator on a specific submit button alone. Thanks.</p>