protected function prepareRequestMediaVersionFromUrl () {
		$this->prepareRequestMediaVersionFromUrlQueryString();
		if ($this->requestMediaSiteVersion === NULL && $this->anyRoutesConfigured) 
			$this->prepareRequestMediaVersionFromUrlPath();
		if ($this->requestMediaSiteVersion === NULL) 
			$this->requestMediaSiteVersion = static::MEDIA_VERSION_FULL;
	}