pub fn restart(&mut self) -> Result<Output> {

        self.stop();
        self.start()
    }
// make sure we stop existing nginx and start new master process
// intentinally ignore failure in stop
make sure we stop existing nginx and start new master process
intentinally ignore failure in stop
make sure we stop existing nginx and start new master process intentinally ignore failure in stop
pub fn restart(&mut self) -> Result<Output> {
        self.stop();
        self.start()
    }
pub fn restart ( & mut self ) -> Result < Output > { self . stop ( ) ; self . start ( ) }
make sure we stop existing nginx and start new master process
intentinally ignore failure in stop
make sure we stop existing nginx and start new master process intentinally ignore failure in stop
&mut self
&mut self