Field 'Usage._free' is never assigned to, and will always have its default value 0

'BaseContainer.ContainerDto' hides inherited member 'Classes.ContainerDto'. Use the new keyword if hiding was intended.

Non-nullable property 'Id' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Dereference of a possibly null reference.

Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call.

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.

Argument of type 'Dictionary<string, Func<Task>>' cannot be used for parameter 'collection' of type 'IEnumerable<KeyValuePair<string, Func<Task>?>>' in 'ConcurrentDictionary<string, Func<Task>?>.ConcurrentDictionary(IEnumerable<KeyValuePair<string, Func<Task>?>> collection)' due to differences in the nullability of reference types.