public void wdDoBeforeAction(com.sap.tc.webdynpro.progmodel.api.IWDBeforeAction validation) {
  //@@begin wdDoBeforeAction
  // If the current action is not validating, then we dont't care whether there is junk
  // on the screen or not
  if (validation.isCurrentActionValidating())
    // As long as the view reference is not null
    if (v != null) {
      // Reset the list of visited UI elements held by the input validator.  It is easier to
      // perform this as a separate method call rather than embedding this functionality into
      // the UITreeVisitor.  This is because the visit() method is called recursively.
      uiTreeVisitor.reset();
      uiTreeVisitor.visit(v.getRootElement());
    }
    else
      msgMgr.reportWarning("Unable to validate the UI tree because it is null");
  //@@end
}