public function get(string $key)
    {
        return isset($this->_configValues[$key])
            ? $this->_configValues[$key]
            : null;
    }
public function get(string $key)
    {
        return isset($this->_configValues[$key])
            ? $this->_configValues[$key]
            : null;
    }
public function get ( string $ key ) { return isset ( $ this -> _configValues [ $ key ] ) ? $ this -> _configValues [ $ key ] : null ; }
Get config item

Get a config item from the internal config container. On a missing key,
return null.

@param string $key Config item key
@return mixed
Get config item