name matches VideoDescriptor['provider'] (e.g. 'youtube'). Last registration wins; unregistering a stale one is a no-op if something else has since replaced it.
Emits through the same typed bus gallery.on() reads from — this is how plugin-contributed events (e.g. autoplayStart/autoplayStop) reach host listeners.
namematchesVideoDescriptor['provider'](e.g.'youtube'). Last registration wins; unregistering a stale one is a no-op if something else has since replaced it.