ActionUsabilityEvent
Supported only by WrapperFactory , represents a check as to whether an action is usable or has been disabled.
If #getReason() is not null
then provides the reason why the action is disabled; otherwise action is enabled.
Supported only by WrapperFactory , represents a check as to whether an action is usable or has been disabled.
If #getReason() is not null
then provides the reason why the action is disabled; otherwise action is enabled.