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.

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

Rename namespace IoTHub.Portal.Shared.Constants so that it no longer conflicts with the reserved language keyword 'Shared'. Using a reserved keyword as the name of a namespace makes it harder for consumers in other languages to use the namespace. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1716)

Type 'CloudToDeviceMethods' is a static holder type but is neither static nor NotInheritable (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1052)

Rename namespace IoTHub.Portal.Shared.Models.v1._0 so that it no longer conflicts with the reserved language keyword 'Shared'. Using a reserved keyword as the name of a namespace makes it harder for consumers in other languages to use the namespace. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1716)