public function mod($expression1, $expression2) : self
    {
        $this->expr->mod($expression1, $expression2);

        return $this;
    }
public function mod($expression1, $expression2) : self
    {
        $this->expr->mod($expression1, $expression2);

        return $this;
    }
public function mod ( $ expression1 , $ expression2 ) : self { $ this -> expr -> mod ( $ expression1 , $ expression2 ) ; return $ this ; }
Divides one number by another and returns the remainder. The first
argument is divided by the second argument.

The arguments can be any valid expression as long as they resolve to numbers.

@see http://docs.mongodb.org/manual/reference/operator/aggregation/mod/
@see Expr::mod

@param mixed|Expr $expression1
@param mixed|Expr $expression2
Divides one number by another and returns the remainder . The first argument is divided by the second argument .