// Content root location
$generator->startObjectElement( 'rootLocation', 'Location' );
$generator->startAttribute( 'href', $this->router->generate( 'ezpublish_rest_loadLocation', array( 'locationPath' => '1/2' ) ) );
$generator->endAttribute( 'href' );
$generator->endObjectElement( 'rootLocation' );

// Users root location
$generator->startObjectElement( 'rootUserGroup', 'UserGroup' );
$generator->startAttribute( 'href', $this->router->generate( 'ezpublish_rest_loadUserGroup', array( 'groupPath' => '1/5' ) ) );
$generator->endAttribute( 'href' );
$generator->endObjectElement( 'rootUserGroup' );

// Media root location
$generator->startObjectElement( 'rootMediaFolder', 'Location' );
$generator->startAttribute( 'href', $this->router->generate( 'ezpublish_rest_loadLocation', array( 'locationPath' => '1/43' ) ) );
$generator->endAttribute( 'href' );
$generator->endObjectElement( 'rootMediaFolder' );