main/core/Manager/Resource/ResourceRestrictionsManager.php
public function isStarted(ResourceNode $resourceNode): bool
    {
        return empty($resourceNode->getAccessibleFrom()) || $resourceNode->getAccessibleFrom() <= new \DateTime();
    }
public function isStarted(ResourceNode $resourceNode): bool
    {
        return empty($resourceNode->getAccessibleFrom()) || $resourceNode->getAccessibleFrom() <= new \DateTime();
    }
public function isStarted ( ResourceNode $ resourceNode ) : bool { return empty ( $ resourceNode -> getAccessibleFrom ( ) ) || $ resourceNode -> getAccessibleFrom ( ) <= new \ DateTime ( ) ; }
Checks if the access period of the resource is started.

@param ResourceNode $resourceNode

@return bool
Checks if the access period of the resource is started .