src/vs/workbench/contrib/debug/browser/rawDebugSession.ts/RawDebugSession/stepInTargets
class RawDebugSession:	stepInTargets(args: DebugProtocol.StepInTargetsArguments): Promise<DebugProtocol.StepInTargetsResponse | undefined> {
		if (this.capabilities.supportsStepInTargetsRequest) {
			return this.send('stepInTargets', args);
		}
		return Promise.reject(new Error('stepInTargets not supported'));
	}