Kotlin pass generic class type to callback and use as gson argument

Question

Aim is to write a callback function and provide it generic class params

...execute(MyCallBack(Type caseAClass,Type caseBClass){
    override fun onCaseAFound(CaseA data){}
    override fun onCaseBFound(CaseB data){}
})

The CaseA and CaseB modals passed to the callback can be dynamic

I'm confused with TypeTokans, Generic types n whatnot

The Class which calls this callback uses Gson and passes the type specified in Callback to Gson with a string, creates object and calls appropriate callback's method with object of declared class aa param

Is this possible?