public function testCreateString()
 {
     $flatBufferBuilder = new FlatBufferBuilder(1);
     $stringWrapper = new StringWrapper($flatBufferBuilder);
     $firstText = $stringWrapper->createString('first_value');
     $secondText = $stringWrapper->createString('second_value');
     $stringWrapper->startObject(25);
     $stringWrapper->addString(2, $firstText);
     $stringWrapper->addString(3, $secondText);
     $stringWrapper->finish($stringWrapper->endObject());
     $stringWrapper->init($stringWrapper->dataBuffer());
     $this->assertEquals('first_value', $stringWrapper->getString(2));
     $this->assertEquals('second_value', $stringWrapper->getString(3));
 }