docs: def perform_bulk_pubmed_query(self):
          """
          If 'bulk_pubmed_query' contains any content, perform a bulk PubMed query,
          add the publications to the publication set, and save.
          """
          if self.bulk_pubmed_query:
              failed_queries = []
              pmid_list = re.findall(r'(\d+)(?:[\s,]+|$)', self.bulk_pubmed_query)
  
              for pmid in pmid_list:
                  try:
                      p, created = Publication.objects.get_or_create(pmid=pmid)
                  except:
                      failed_queries.append(pmid)
                  else:
                      self.publications.add(p.id)
  
              if failed_queries:
                  failed_queries.sort(key=int)
                  self.bulk_pubmed_query = 'FAILED QUERIES: {}'.format(', '.join(failed_queries))
              else:
                  self.bulk_pubmed_query = ''