GraphAware\Neo4j\OGM\Metadata\NodeEntityMetadata::getAssociationMappedByTargetField PHP Method

    public function getAssociationMappedByTargetField($assocName)
    {
        foreach ($this->relationships as $relationship) {
            if ($relationship->hasMappedByProperty() && $relationship->getMappedByProperty() === $assocName) {
                return $relationship->getPropertyName();
            }
        }
        return null;
    }