gistfile1.php

<?php

$robots = new Robots();

$modelsManager = $di->get('modelsManager');

$relations = $modelsManager->getRelations('Robots');

foreach ($relations as $relation) {
	$options = $relation->getOptions();
	if (isset($options['alias'])) {
		echo $alias = $options['alias'];
	} else {
		echo 'no alias', PHP_EOL;
	}
}