WoohooLabs\Yin\JsonApi\Hydrator\Relationship\ToManyRelationship::getResourceIdentifierIds PHP Method

    public function getResourceIdentifierIds()
    {
        $ids = [];
        foreach ($this->resourceIdentifiers as $resourceIdentifier) {
            /** @var \WoohooLabs\Yin\JsonApi\Schema\ResourceIdentifier $resourceIdentifier */
            $ids[] = $resourceIdentifier->getId();
        }
        return $ids;
    }