    public function withoutAttribute($attribute)
    {
        if (false === array_key_exists($attribute, $this->attributes)) {
            return $this;
        }

        $new = clone $this;
        unset($new->attributes[$attribute]);

        return $new;
    }
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.