OptionalclassOptionalonOptionalonFires on every keystroke with the match set (for a host that dims or filters on it). OPTIONAL (issue #18): the common case is the bar driving the selection store on an explicit pick, which it does regardless of this prop, so callers no longer pass a no-op to satisfy it. GraphToolbar's internal SearchBar relies on exactly this default.
OptionalplaceholderOptionalselectAuto-select first result on Enter. Default true.
Fires when the user EXPLICITLY picks a result (dropdown click or Enter). 12.9: camera moves belong here, not on onSearchChange; centering the first match on every keystroke made the view jump while typing.