Merge pull request #3779 from nextcloud/techdept/psalm-errors-3

composer.json

lib/Account.php

lib/Attachment.php

lib/Contracts/IAvatarService.php

lib/Controller/AccountsController.php

lib/Controller/AvatarsController.php

lib/Db/LocalAttachmentMapper.php

lib/Db/MailboxMapper.php

lib/Http/JsonResponse.php

lib/IMAP/MailboxSync.php

lib/IMAP/MessageMapper.php

lib/Model/IMAPMessage.php

lib/Model/IMessage.php

lib/Model/NewMessageData.php

lib/Service/AccountService.php

lib/Service/Attachment/AttachmentStorage.php

lib/Service/AutoConfig/SmtpServerDetector.php

lib/Service/Avatar/Cache.php

lib/Service/AvatarService.php

lib/Service/Classification/ImportanceClassifier.php