Webiny\Component\Entity\Attribute\AbstractAttribute::setValidators PHP Method

    public function setValidators($validators = [])
    {
        if (is_array($validators)) {
            $this->validators = $validators;
        } else {
            $this->validators = func_get_args();
            if (count($this->validators) == 1 && is_string($this->validators[0])) {
                $this->validators = explode(',', $this->validators[0]);
            }
        }
        if (in_array('required', $this->validators)) {
            $this->setRequired();
            unset($this->validators[array_search('required', $this->validators)]);
        }
        return $this;
    }