The real way the native stack is going to work.
The dashed boxes are generated automatically by a tool call swig. The code written by the vendor is the same as in the ideal way. However more steps need to happen after the native code is written before it can be used. In order to make development and testing easy for a thirdparty, the dashed boxes can be generated in advance. In this case there will be method stubs, which the thirdparty developer will need to fill in.

I'm doing it this way because I know how to do it this way. I don't know how to do it the other way.

RealNativeSensorDeviceStack.dia (application/x-dia-diagram)
RealNativeSensorDeviceStack.png (image/png)