setCurrentWriteLanguageId example

$referenceDefinition = $field->getReferenceDefinition();

        if (!\is_array($value)) {
            throw new ExpectedArrayException($path);
        }

        foreach ($value as $languageId => $translation) {
            $clonedParams = $parameters->cloneForSubresource(
                $referenceDefinition,
                $path . '/' . $languageId
            );
            $clonedParams->setCurrentWriteLanguageId($languageId);

            $this->writeExtractor->extract($translation, $clonedParams);
        }

        // the validation is only required for new entities         if ($existence->exists()) {
            return;
        }

        $languageIds = array_keys($value);
        // the translation in the system language is always required for new entities,