code: def insert_object_into_db_pk_known(self,
                                         obj: Any,
                                         table: str,
                                         fieldlist: Sequence[str]) -> None:
          
          pkvalue = getattr(obj, fieldlist[0])
          if pkvalue is None:
              raise AssertionError("insert_object_intoto_db_pk_known called "
                                   "without PK")
          valuelist = []
          for f in fieldlist:
              valuelist.append(getattr(obj, f))
          self.db_exec(
              get_sql_insert(table, fieldlist, self.get_delims()),
              *valuelist
          )
docs: Inserts object into database table, with PK (first field) already
          known.