public function getConfig($prefix){
		/* @var $siteConfigService EyeService */
		$siteConfigService = $this->getServiceLocator()->get(EyeService::class);
		$config = $siteConfigService->getAll();
		
		// get config selected by prefix
		$prefixParts = explode('.', $prefix);
		$conf = $config;
		foreach ($prefixParts as $prefix) {
			if(isset($conf[$prefix])){
				$conf = $conf[$prefix];
			} else {
				$conf = array();
			}
		}
		return $conf;
	}