creates a booleansubscription with a specified function to invoke upon unsubscribe . concode_field_sep int unsubscribed concode_elem_sep AtomicIntegerFieldUpdater<BooleanSubscription> UNSUBSCRIBED_UPDATER concode_elem_sep Action0 action concode_field_sep void unsubscribe concode_elem_sep boolean isUnsubscribed
BooleanSubscription function ( Action0 arg0 ) { return new BooleanSubscription ( arg0 ) ; }