TWizardStep represents a wizard step. The wizard owning the step
can be obtained by {@link getWizard Wizard}.
To specify the type of the step, set {@link setStepType StepType};
For step title, set {@link setTitle Title}. If a step can be re-visited,
set {@link setAllowReturn AllowReturn} to true.
/**
* Ensures child controls are created.
* @param mixed event parameter
*/
public function onInit($param)
{
parent::onInit($param);
$this->ensureChildControls();
}
