If the two calls are sequential then simply:

  var x = someFunction()
  someOtherFunction()

If you would have written

  var xTask = SomeFunctionAsync();
  await WaitForSomeOtherFunctionAsync();
  string x = await xTask;

then it would be:

  try (var scope = StructuredTaskScope.open()) {   // JDK 24+ preview feature 
      var x = scope.fork(() -> someFunction());
      scope.fork(() -> waitForSomeOtherFunction());
      scope.join();
      String result = x.get(); // already completed 
  }