code: public function insert(array $columnValues, bool $addBooleanColumnFalse = false)
      {
          if ($addBooleanColumnFalse) {
              $columnValues = $this->addBooleanColumnFalse($columnValues);
          }
          $ib = new InsertBuilder($this->tableName);
          if ($this->getPrimaryKeyColumnName() !== null) {
              $ib->setPrimaryKeyName($this->getPrimaryKeyColumnName());
          }
          $this->addColumnsToBuilder($ib, $columnValues);
          return $ib->runExecute();
      }
docs: returns primary key if set, otherwise returns pg result