The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/setup-dotnet@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

'DefaultValidatorExtensions.Validate<T>(IValidator<T>, T, params Expression<Func<T, object>>[])' is obsolete: 'This method will be removed in FluentValidation 10. Instead use Validate(instance, options => options.IncludeProperties(expressions))'

'MailboxAddress.MailboxAddress(string)' is obsolete: 'This constructor will be going away due to it causing too much confusion. Use new MailboxAddress(string name, string address) or MailboxAddress.Parse(string) instead.'

Field 'BookUserServiceTests.bookUserValidator' is never assigned to, and will always have its default value null

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.