code: def _add_gmaf(self, variant_obj, info_dict):
          
          ##TODO search for max freq in info dict
          for transcript in variant_obj.transcripts:
              gmaf_raw = transcript.GMAF
              if gmaf_raw:
                  gmaf = float(gmaf_raw.split(':')[-1])
                  variant_obj.add_frequency('GMAF', gmaf)
                  
                  if not variant_obj.thousand_g:
                      variant_obj.thousand_g = gmaf
docs: Add the gmaf frequency
          
          Args:
              variant_obj (puzzle.models.Variant)
              info_dict (dict): A info dictionary