Elementor\Element_Base::get_render_attribute_string PHP Method

    public function get_render_attribute_string($element)
    {
        if (empty($this->_render_attributes[$element])) {
            return '';
        }
        $render_attributes = $this->_render_attributes[$element];
        $attributes = [];
        foreach ($render_attributes as $attribute_key => $attribute_values) {
            $attributes[] = sprintf('%s="%s"', $attribute_key, esc_attr(implode(' ', $attribute_values)));
        }
        return implode(' ', $attributes);
    }