The components an interactions[] block's refs resolve against. A ref that
resolves to no component is a validation failure (unresolved-ref), matching
the standard's "an implementation MUST reject a binding whose ref does not
resolve within the document".
control: and widget: refs may be declared with an empty object when the
component needs no adapter — their events and their setFilter action both
run through the shared exploration view.
The components an
interactions[]block's refs resolve against. A ref that resolves to no component is a validation failure (unresolved-ref), matching the standard's "an implementation MUST reject a binding whoserefdoes not resolve within the document".control:andwidget:refs may be declared with an empty object when the component needs no adapter — their events and theirsetFilteraction both run through the shared exploration view.