Method renderInlineElement

/**
 * Renders the inline element
 *
 * @param   WebAssetItemInterface|array  $item  The element
 *
 * @return  string  The resulting string
 *
 * @since   4.0.0
 */
private function renderInlineElement($item) : string
{
    $buffer = '';
    $lnEnd = $this->_doc->_getLineEnd();
    $tab = $this->_doc->_getTab();
    if ($item instanceof WebAssetItemInterface) {
        $attribs = $item->getAttributes();
        $content = $item->getOption('content');
    } else {
        $attribs = $item;
        $content = $item['content'] ?? '';
        unset($attribs['content']);
    }
    // Do not produce empty elements
    if (!$content) {
        return '';
    }
    // Add "nonce" attribute if exist
    if ($this->_doc->cspNonce) {
        $attribs['nonce'] = $this->_doc->cspNonce;
    }
    $buffer .= $tab . '<style';
    $buffer .= $this->renderAttributes($attribs);
    $buffer .= '>';
    // This is for full XHTML support.
    if ($this->_doc->_mime !== 'text/html') {
        $buffer .= $tab . $tab . '/*<![CDATA[*/' . $lnEnd;
    }
    $buffer .= $content;
    // See above note
    if ($this->_doc->_mime !== 'text/html') {
        $buffer .= $tab . $tab . '/*]]>*/' . $lnEnd;
    }
    $buffer .= '</style>' . $lnEnd;
    return $buffer;
}