public static function configured($name = null)
    {
        if ($name !== null) {
            deprecationWarning(
                'Checking for a named engine with configured() is deprecated. ' .
                'Use Configure::isConfigured() instead.'
            );

            return isset(static::$_engines[$name]);
        }

        return array_keys(static::$_engines);
    }
public static function configured($name = null)
    {
        if ($name !== null) {
            deprecationWarning(
                'Checking for a named engine with configured() is deprecated. ' .
                'Use Configure::isConfigured() instead.'
            );

            return isset(static::$_engines[$name]);
        }

        return array_keys(static::$_engines);
    }
public static function configured ( $ name = null ) { if ( $ name !== null ) { deprecationWarning ( 'Checking for a named engine with configured() is deprecated. ' . 'Use Configure::isConfigured() instead.' ) ; return isset ( static :: $ _engines [ $ name ] ) ; } return array_keys ( static :: $ _engines ) ; }
Gets the names of the configured Engine objects.

Checking if a specific engine has been configured with this method is deprecated.
Use Configure::isConfigured() instead.

@param string|null $name Engine name.
@return string[]|bool Array of the configured Engine objects, bool for specific name.
Gets the names of the configured Engine objects .