public function multiply($expression1, $expression2, ...$expressions) : self
    {
        $this->expr->multiply(...func_get_args());

        return $this;
    }
public function multiply($expression1, $expression2, ...$expressions) : self
    {
        $this->expr->multiply(...func_get_args());

        return $this;
    }
public function multiply ( $ expression1 , $ expression2 , ... $ expressions ) : self { $ this -> expr -> multiply ( ... func_get_args ( ) ) ; return $ this ; }
Multiplies numbers together and returns the result.

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

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

@param mixed|Expr $expression1
@param mixed|Expr $expression2
@param mixed|Expr ...$expressions Additional expressions
Multiplies numbers together and returns the result .