public function getConfigHeader($key)
    {
        $path = $this->getDir() . 'config/header/' . $key . '.conf.php';
        if (is_readable($path) && is_file($path)) {
            return file_get_contents($path);
        }
        return null;
    }
public function getConfigHeader($key)
    {
        $path = $this->getDir() . 'config/header/' . $key . '.conf.php';
        if (is_readable($path) && is_file($path)) {
            return file_get_contents($path);
        }
        return null;
    }
public function getConfigHeader ( $ key ) { $ path = $ this -> getDir ( ) . 'config/header/' . $ key . '.conf.php' ; if ( is_readable ( $ path ) && is_file ( $ path ) ) { return file_get_contents ( $ path ) ; } return null ; }
Get the documentation header for extension config located at key path

@param $key
@return null|string
Get the documentation header for extension config located at key path