Non-nullable property 'MapViewModel' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable field 'ThemeResources' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Member 'Zoom' does not access instance data and can be marked as static (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1822)

Type 'VirtualSurfaceRenderOperation' can be sealed because it has no subtypes in its containing assembly and is not externally visible (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1852)

Type 'SKColor' can be sealed because it has no subtypes in its containing assembly and is not externally visible (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1852)