private function handleGenbankNumber($genbanknumbers, $category = 'genbank number')
 {
     $unique_genbanknumbers = array_unique(array_map('trim', explode(';', $genbanknumbers)));
     foreach ($unique_genbanknumbers as $genbanknumber) {
         $code = new Codes();
         $code->setCodeCategory($category);
         $code->setCode($genbanknumber);
         $this->staging->addRelated($code);
     }
 }