public function join(
        $table,
        $firstTableCol = '',
        /*# string */ $operator = ClauseInterface::NO_OPERATOR,
        /*# string */ $secondTableCol = ClauseInterface::NO_VALUE
    ) {
        return $this->realJoin('INNER', $table, $firstTableCol, $operator,
            $secondTableCol);
    }
public function join(
        $table,
        $firstTableCol = '',
        /*# string */ $operator = ClauseInterface::NO_OPERATOR,
        /*# string */ $secondTableCol = ClauseInterface::NO_VALUE
    ) {
        return $this->realJoin('INNER', $table, $firstTableCol, $operator,
            $secondTableCol);
    }
{@inheritDoc}