public function removeJavascriptContent($key)
{
foreach ($this->requiredJavascript as $levelKey => &$level) {
if (isset($this->requiredJavascript[$levelKey][$key]) && $this->requiredJavascript[$levelKey][$key]['type'] == 'content') {
unset($this->requiredJavascript[$levelKey][$key]);
}
}
}