Nullability of type of parameter 'other' doesn't match overridden member (possibly because of nullability attributes).

Nullability of reference types in type of parameter 'value' of 'void AssetConfiguration.this[string key].set' doesn't match implicitly implemented member 'void IConfiguration.this[string key].set' (possibly because of nullability attributes).

Nullability of reference types in type of parameter 'value' of 'void BaseAlternateConfigurationFile.this[string key].set' doesn't match implicitly implemented member 'void IConfiguration.this[string key].set' (possibly because of nullability attributes).

Nullability of reference types in type of parameter 'state' of 'IDisposable EmptyConfigurationSection.RegisterChangeCallback(Action<object> callback, object state)' doesn't match implicitly implemented member 'IDisposable IChangeToken.RegisterChangeCallback(Action<object?> callback, object? state)' (possibly because of nullability attributes).

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread.

Possible null reference return.

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread.

Possible null reference return.

Possible null reference assignment.