Use kotlinx.serialization instead of Jackson for generated types

It would be great if we could do something like:

generateJava {
    generatedTypesSerializer = "kotlinx.serialization" // Default: "jackson" (use `null` to omit serialization annotations altogether)
}

Assuming we cannot do this right now, is there a recommended way to customize the generator to make it do something like this in our own project?

Start by locating the generator configuration and the code that applies Jackson serialization to generated types. Compare that path with the requested generatedTypesSerializer option and determine whether project-level customization is currently supported. Done means the generator can select kotlinx.serialization, Jackson, or no serialization annotations as described, with documented customization guidance and coverage for each option.