private function insertTestData()
{
$baseballTag = new \Documents\Tag('baseball');
$footballTag = new \Documents\Tag('football');
$blogPost = new \Documents\BlogPost();
$blogPost->name = 'Test 1';
$blogPost->addTag($baseballTag);
$this->dm->persist($blogPost);
$blogPost = new \Documents\BlogPost();
$blogPost->name = 'Test 2';
$blogPost->addTag($baseballTag);
$this->dm->persist($blogPost);
$blogPost = new \Documents\BlogPost();
$blogPost->name = 'Test 3';
$blogPost->addTag($footballTag);
$this->dm->persist($blogPost);
$blogPost = new \Documents\BlogPost();
$blogPost->name = 'Test 4';
$blogPost->addTag($baseballTag);
$blogPost->addTag($footballTag);
$this->dm->persist($blogPost);
$this->dm->flush();
$this->dm->clear();
}