Doctrine\MongoDB\Aggregation\Stage\Operator::not PHP Method

Evaluates a boolean and returns the opposite boolean value.

See also: http://docs.mongodb.org/manual/reference/operator/aggregation/not/

See also: Expr::not

public not ( mixed \| Expr $expression )
$expression	mixed \| Doctrine\MongoDB\Aggregation\Expr

    public function not($expression)
    {
        $this->expr->not($expression);
        return $this;
    }

Operator