PHPStan: Write-only properties never read in multiple classes

[Vitexus]

PHPStan level 5 reports several properties that are written but never read, indicating dead code or missing functionality.

Found running PHPStan 2.x with PHP 8.4.

Affected files

• DataObjects/SubscribeWebHook.php:40 — $jsonContent is never read, only written
• DataObjects/UnsubscribeWebHook.php:42 — $jsonContent is never read, only written
• Exceptions/InvalidResponseException.php:22 — $response is never read, only written
• Exceptions/UnsupportedLanguageException.php:20 — $language is never read, only written
• Exceptions/User/UserCreationBadEmailSyntaxException.php:22 — $emailAddress is never read, only written
• RPC/Client.php:25 — $jsonAdapter is never read, only written

How to reproduce

vendor/bin/phpstan analyse --level=5 src/