cancelAsyncCall
Cancels the async call id (runCommandAsync, setBufferAsync, setBufferAtAsync, setImageAsync…). Its completion callback still runs, with AsyncCallStatus.CANCELED. False if it's running, done or already canceled.
Cancels the async call id (runCommandAsync, setBufferAsync, setBufferAtAsync, setImageAsync…). Its completion callback still runs, with AsyncCallStatus.CANCELED. False if it's running, done or already canceled.