src/ErrorHandler/ErrorHandler.php
public function getCfg($key = null)
    {
        if (!\strlen($key)) {
            return $this->cfg;
        }
        if (isset($this->cfg[$key])) {
            return $this->cfg[$key];
        }
        return null;
    }
public function getCfg($key = null)
    {
        if (!\strlen($key)) {
            return $this->cfg;
        }
        if (isset($this->cfg[$key])) {
            return $this->cfg[$key];
        }
        return null;
    }
Retrieve a configuration value

@param string $key what to get

@return mixed