exception property
Exception
exception
The exception given when the token was cancelled.
On debug builds this will throw an exception if the token hasn't been called yet. On release builds a fallback CancelledException will be returned to prevent unexpected exceptions.
Implementation
Exception get exception {
assert(
isCancelled,
'Attempted to get the cancellation exception of a $runtimeType that '
'hasn\'t been cancelled yet.',
);
return _exception ??= CancelledException();
}