code: protected Object getPreviousFormBean()
      {
          checkPreviousActionInfoDisabled();
          return _previousActionInfo != null ? InternalUtils.unwrapFormBean( _previousActionInfo.getForm() ) : null;
      }
docs: Get the submitted form bean from the most recent action execution in this PageFlowController.
  <p>
  <i>Note: if the current page flow does not contain a
  </i>{@link org.apache.beehive.netui.pageflow.annotations.Jpf.Forward &#64;Jpf.Forward}<i> or a
  </i>{@link org.apache.beehive.netui.pageflow.annotations.Jpf.SimpleAction &#64;Jpf.SimpleAction}<i> with
  </i><code>navigateTo={@link org.apache.beehive.netui.pageflow.annotations.Jpf.NavigateTo#previousAction Jpf.NavigateTo.previousAction}</code><i>,
  then this method will always return </i><code>null</code><i> by default.  To enable it in this
  situation, add the following method to the page flow:</i><br>
  <blockquote>
  <code>
  protected boolean alwaysTrackPreviousAction()<br>
  {<br>
  &nbsp;&nbsp;&nbsp;&nbsp;return true;<br>
  }<br>
  </code>
  </blockquote>
  
  @return the form bean instance from the most recent action execution, or <code>null</code>
  if there was no form bean submitted.
  @see #getPreviousPageInfo
  @see #getCurrentPageInfo
  @see #getPreviousActionInfo
  @see #getPreviousActionURI
  @see #getPreviousForwardPath
  @see #getCurrentForwardPath