func run()
Runs the process with the current environment.
func interrupt()
Sends an interrupt signal to the receiver and all of its subtasks.
割り込み信号をレシーバとそれの下位タスクの全てに送ります。
func resume() -> Bool
Resumes execution of a suspended task.
func terminate()
Sends a terminate signal to the receiver and all of its subtasks.
終止信号をレシーバとそれの下位タスクの全てに送ります。
func waitUntilExit ()
Blocks the process until the receiver is finished.