Task.executeInNewThread
void executeInNewThread() @trustedCreate a new thread for executing this Task, execute it in the newly created thread, then terminate the thread. This can be used for future/promise parallelism. An explicit priority may be given to the Task. If one is provided, its value is forwarded to core.thread.Thread.priority. See task for usage example.
void executeInNewThread(int priority) @trustedDitto