public static function setUpBeforeClass()
{
parent::setUpBeforeClass();
self::$loader = \ImplementationLoader::getInstance();
$session = self::$loader->getSession(self::$loader->getCredentials());
if ($session->nodeExists('/node-a')) {
$session->removeItem('/node-a');
}
if ($session->nodeExists('/node-b')) {
$session->removeItem('/node-b');
}
$session->save();
$a = $session->getNode('/')->addNode('node-a');
$a->addNode('child-a')->setProperty('prop', 'aa');
$a->addNode('child-b')->setProperty('prop', 'ab');
$b = $session->getNode('/')->addNode('node-b');
$b->addNode('child-a')->setProperty('prop', 'ba');
$b->addNode('child-b')->setProperty('prop', 'bb');
$session->save();
}
