Neomerx\JsonApi\Encoder\Parameters\ParametersAnalyzer::getRelationshipNameForTopResource PHP Метод

    private function getRelationshipNameForTopResource($curPath)
    {
        $nextSeparatorPos = strpos($curPath, DocumentInterface::PATH_SEPARATOR);
        $relationshipName = $nextSeparatorPos === false ? $curPath : substr($curPath, 0, $nextSeparatorPos);
        return $relationshipName;
    }