code: def get_publications(gene_names, save_json_name=None):
      
      if len(gene_names) != 2:
          logger.warning('Other than 2 gene names given.')
          return []
      res_dict = _send_request(gene_names)
      if not res_dict:
          return []
      if save_json_name is not None:
          # The json module produces strings, not bytes, so the file should be
          # opened in text mode
          with open(save_json_name, 'wt') as fh:
              json.dump(res_dict, fh, indent=1)
      publications = _extract_publications(res_dict, gene_names)
      return publications
docs: Return evidence publications for interaction between the given genes.
  
      Parameters
      ----------
      gene_names : list[str]
          A list of gene names (HGNC symbols) to query interactions between.
          Currently supports exactly two genes only.
      save_json_name : Optional[str]
          A file name to save the raw BioGRID web service output in. By default,
          the raw output is not saved.
  
      Return
      ------
      publications : list[Publication]
          A list of Publication objects that provide evidence for interactions
          between the given list of genes.