disableDefaultTargetGestures property
if disableDefaultTargetGestures parameter is true
onTargetClick, onTargetDoubleTap, onTargetLongPress and
disposeOnTap parameter will not work
Note: If disableDefaultTargetGestures is true then make sure to
dismiss current showcase with ShowCaseWidget.of(context).dismiss()
if you are navigating to other screen. This will be handled by default
if disableDefaultTargetGestures is set to false.
Implementation
final bool disableDefaultTargetGestures;