PhpCss\Ast\Visitor\Explain::visitEnterSelectorSequence PHP Method

    public function visitEnterSelectorSequence()
    {
        if ($this->_current === $this->_dom->documentElement && $this->_current->hasChildNodes()) {
            $this->_current->appendChild($this->_dom->createElementNs($this->_xmlns, 'text'))->appendChild($this->_dom->createCDATASection(', '));
        }
        return $this->start($this->appendElement('selector'));
    }