The field 'SvgSurface.nextImageId' is assigned but its value is never used

Nullable value type may be null.

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.

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.

Nullable value type may be null.

Nullable value type may be null.

Possible null reference argument for parameter 'path' in 'DirectoryInfo Directory.CreateDirectory(string path)'.

Nullable value type may be null.

Possible null reference argument for parameter 'relation' in 'Feature DefaultFeatureInterpreter2.InterpretMultipolygonRelation(CompleteRelation relation)'.