ToastOverlay.addToast

Displays toast.

Only one toast can be shown at a time; if a toast is already being displayed, either toast or the original toast will be placed in a queue, depending on the priority of toast. See propertyToast:priority.

If called on a toast that's already displayed, its timeout will be reset.

If called on a toast currently in the queue, the toast will be bumped forward to be shown as soon as possible.