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

    public function isSingleValuedAssociation($fieldName)
    {
        foreach ($this->relationships as $relationship) {
            if ($relationship->getPropertyName() === $fieldName && !$relationship->isCollection()) {
                return true;
            }
        }
        return false;
    }