Registrar passed as the second argument to a plugin's install function.
Each registered disposer runs (in reverse order) when the plugin is
uninstalled via world.uninstallPlugin(id) or when world.dispose() is called.
Disposers may return promises; world disposal awaits them. The supplied
cleanup control can request world disposal without making the callback wait
on the external teardown barrier that includes that callback.
Registrar passed as the second argument to a plugin's
installfunction. Each registered disposer runs (in reverse order) when the plugin is uninstalled viaworld.uninstallPlugin(id)or whenworld.dispose()is called. Disposers may return promises; world disposal awaits them. The supplied cleanup control can request world disposal without making the callback wait on the external teardown barrier that includes that callback.