docs: def run(self, key, value, num_alts):
          """Check value in INFO[key] of record
  
          Currently, only checks for consistent counts are implemented
  
          :param str key: key of INFO entry to check
          :param value: value to check
          :param int alts: list of alternative alleles, for length
          """
          field_info = self.header.get_info_field_info(key)
          if not isinstance(value, list):
              return
          TABLE = {
              ".": len(value),
              "A": num_alts,
              "R": num_alts + 1,
              "G": binomial(num_alts + 1, 2),  # diploid only at the moment
          }
          expected = TABLE.get(field_info.number, field_info.number)
          if len(value) != expected:
              tpl = "Number of elements for INFO field {} is {} instead of {}"
              warnings.warn(
                  tpl.format(key, len(value), field_info.number), exceptions.IncorrectListLength
              )