public function removePageFlow()
{
$this->pageFlow = new NullPageFlow($this->pageFlow->getID());
}
/**
* @return array
* @since Method available since Release 2.0.0
*/
protected function readDefinition()
{
$processor = new Processor();
return $processor->processConfiguration(new Definition17Configuration(), array('definition17' => Yaml::parse($this->pageFlowRegistries->getFileName($this->pageFlow->getID()))));
}