public function testGetSyncedExtendedMergeVars()
{
$this->assertEmpty($this->entity->getExtendedMergeVars());
$var1 = new ExtendedMergeVar();
$var2 = new ExtendedMergeVar();
$var1->markSynced();
$var2->markDropped();
$this->entity->addExtendedMergeVar($var1);
$this->entity->addExtendedMergeVar($var2);
$extendedMergeVars = $this->entity->getSyncedExtendedMergeVars();
$this->assertCount(1, $extendedMergeVars);
$this->assertContainsOnly($var1, $extendedMergeVars);
}