public function instantiateIn($parent)
{
$previousButton = $this->createNavigationButton($this->getWizard()->getFinishPreviousButtonStyle(), false, TWizard::CMD_PREVIOUS);
$completeButton = $this->createNavigationButton($this->getWizard()->getFinishCompleteButtonStyle(), true, TWizard::CMD_COMPLETE);
$cancelButton = $this->createNavigationButton($this->getWizard()->getCancelButtonStyle(), false, TWizard::CMD_CANCEL);
$controls = $parent->getControls();
$controls->add($previousButton);
$controls->add("\n");
$controls->add($completeButton);
$controls->add("\n");
$controls->add($cancelButton);
$parent->setPreviousButton($previousButton);
$parent->setCompleteButton($completeButton);
$parent->setCancelButton($cancelButton);
}