The handler can either return nothing (in versions prior to 1.12 this was the only option), or a boolean or array of
booleans indicating whether the app handled the detections.
Detections that are returned as unhandled (indicate by a false return value) will not be highlighted in the
overlay, even if OverlayConfiguration#showDetections is set to true. No audio or vibration feedback will
be emitted either.
Remarks
Returning false from the handler does not influence the usage in quota-based plans. All detections are always
counted, regardless if they were handled or not.
Result type for barcode detection handler.
The handler can either return nothing (in versions prior to 1.12 this was the only option), or a boolean or array of booleans indicating whether the app handled the detections.
Detections that are returned as unhandled (indicate by a
falsereturn value) will not be highlighted in the overlay, even if OverlayConfiguration#showDetections is set to true. No audio or vibration feedback will be emitted either.