ARC2::getNTriplesSerializer PHP Method

    static function getNTriplesSerializer($a = '')
    {
        return ARC2::getSer('NTriples', $a);
    }

 public function testSelectSerializeAndDelete()
 {
     global $EndPoint4store, $modeDebug, $prefixSparql, $prefixTurtle, $graph1, $graph2;
     $s = new Endpoint($EndPoint4store, false, $modeDebug);
     $this->checkIfInitialState($s);
     $r = $s->set($graph1, $prefixTurtle . "\n@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .\n\t\t\t\t\ta:A b:Name \"Test2\"@en.\n\t\t\t\t\ta:A b:Name \"Test3\"@fr.\n\t\t\t\t\ta:A b:Name \"Test4\".\n\t\t\t\t\ta:A b:date \"2010-03-09T22:30:00Z\"^^xsd:dateTime .\n\t\t\t\t\t");
     $q = $prefixSparql . "\n select * where {GRAPH <" . $graph1 . "> {a:A ?p ?o.}} ";
     $triples = $s->query($q, 'rows');
     $err = $s->getErrors();
     if ($err) {
         print_r($err);
         $this->assertTrue(false);
     }
     for ($i = 0, $i_max = count($triples); $i < $i_max; $i++) {
         $triples[$i]['s'] = "http://example.com/test/a/A";
         $triples[$i]['s type'] = "uri";
     }
     //print_r($triples);
     /* Serializer instantiation */
     $ser = ARC2::getNTriplesSerializer();
     /* Serialize a triples array */
     $docd = $ser->getSerializedTriples($triples, 1);
     $q = "DELETE DATA {  \n\t\t\t\tGRAPH <" . $graph1 . "> {    \n\t\t\t\t{$docd} \n    \t\t}}";
     //print_r($q);
     $res = $s->query($q, 'raw');
     $err = $s->getErrors();
     if ($err) {
         print_r($err);
         $this->assertTrue(false);
     }
     $this->assertTrue($res);
     $this->checkIfInitialState($s);
 }