struct StepInRequest

The request resumes the given thread to step into a function/method and

allows all other threads to run freely by resuming them. If the debug adapter

supports single thread execution (see capability

`supportsSingleThreadExecutionRequests`), setting the `singleThread` argument

to true prevents other suspended threads from resuming. If the request cannot

step into a target, `stepIn` behaves like the `next` request. The debug

adapter first sends the response and then a `stopped` event (with reason

`step`) after the step has completed. If there are multiple function/method

calls (or other targets) on the source line, the argument `targetId` can be

used to control into which target the `stepIn` should occur. The list of

possible targets for a given source line can be retrieved via the

`stepInTargets` request.