public function testParseToString()
 {
     $collection = new PropertyCollection();
     $collection->add(new Property(array('name' => 'test1')));
     $collection->add(new Property(array('name' => 'test2')));
     $expected = PHP_EOL . '    public $test1;' . PHP_EOL . '' . PHP_EOL . '    public $test2;' . PHP_EOL;
     $this->assertEquals($expected, $collection->toString());
 }