private function buildSrcEntity(&$citEntity, &$em)
 {
     $srcEntity = new Source();
     $srcEntity->setDisplayName($citEntity->getTitle());
     $srcEntity->setDescription($citEntity->getFullText());
     $srcEntity->setYear($citEntity->getYear());
     $srcEntity->setIsCitation(true);
     $srcEntity->setSourceType($em->getRepository('AppBundle:SourceType')->findOneBy(array('id' => 2)));
     $srcEntity->setCreatedBy($em->getRepository('AppBundle:User')->findOneBy(array('id' => '6')));
     $this->transferInteractions($citEntity, $srcEntity, $em);
     //print("\n    Interaction-- records transfered to new Source citation.");
     $this->transferAuthors($citEntity, $srcEntity, $em);
     //print("\n    Authors-- contributed to the new Source citation.");
     $em->persist($srcEntity);
     return $srcEntity;
 }