$IP = getenv( 'MW_INSTALL_PATH' );

if ( $IP === false ) {
    $IP = dirname( __FILE__ ) . '/../../../..';
}

require_once( $IP . '/maintenance/Maintenance.php' );

class WhyYouNoHasDecentLoadingMechanism extends Maintenance {
    public function execute() {}
}

$maintClass = 'WhyYouNoHasDecentLoadingMechanism';
require_once( DO_MAINTENANCE );