code: def getFeatureById(self, featureId):
          
          sql = "SELECT * FROM FEATURE WHERE id = ?"
          query = self._dbconn.execute(sql, (featureId,))
          ret = query.fetchone()
          if ret is None:
              return None
          return sqlite_backend.sqliteRowToDict(ret)
docs: Fetch feature by featureID.
  
          :param featureId: the FeatureID as found in GFF3 records
          :return: dictionary representing a feature object,
              or None if no match is found.